Double Edges Blade Sales

Double Edges Blade Sales Market Outlook

Globally, the double edges blade market is projected to reach a size of approximately USD 8.5 billion by 2035, with a compound annual growth rate (CAGR) of around 6.2% from 2025 to 2035. The anticipation of market growth can be attributed to increasing demand from various industries, especially in manufacturing, healthcare, and household applications. Moreover, innovations in blade materials and manufacturing processes are set to enhance product performance and longevity, thereby attracting a broader customer base. The rise of e-commerce platforms has also significantly contributed to market accessibility, allowing consumers to easily purchase high-quality double edges blades. Additionally, the growing interest in DIY projects and crafts has fueled the market as consumers seek versatile tools for a variety of applications.

Growth Factor of the Market

The growth of the double edges blade market is primarily driven by the broad utilization of these blades across different sectors, including industrial, surgical, and household applications. The increasing production and consumption of packaged foods have necessitated the use of efficient cutting tools, further boosting demand for double edges blades. Moreover, advancements in technology have led to the development of sharper and more durable blades, which enhance user experience and safety. The surge in online shopping has also facilitated easier access to specialized products, allowing consumers to select blades suited for specific tasks and industries. Additionally, the growing trend of home improvements and crafts has seen an increase in the popularity of double edges blades among hobbyists and professionals alike, thus contributing to overall market growth.

Key Highlights of the Market

• The global double edges blade market is projected to grow at a CAGR of 6.2% from 2025 to 2035.
• Innovation in blade materials, such as titanium and ceramic, is enhancing product durability and sharpness.
• Increasing demand in the surgical sector is driving the market for high-precision blades.
• The rise of e-commerce has improved accessibility and variety for customers purchasing double edges blades.
• DIY crafts and home improvement projects have significantly contributed to the consumer market growth.

By Product Type

Carbon Steel Double Edges Blade:

Carbon steel double edges blades are widely favored due to their excellent sharpness and affordability. The hardness of carbon steel allows for effective cutting performance, making these blades suitable for a myriad of applications, ranging from household tasks to industrial usage. Their ability to retain sharpness for extended periods enhances their appeal in various sectors. However, carbon steel blades are susceptible to rust, which requires users to maintain them properly through regular cleaning and oiling. This segment is expected to witness steady growth as consumers continue to appreciate the balance of performance and cost-effectiveness they offer.

Stainless Steel Double Edges Blade:

The stainless steel double edges blade segment is rapidly gaining traction due to its inherent resistance to corrosion and staining. This feature not only extends the lifespan of the blades but also makes them suitable for use in environments where hygiene is critical, such as in medical and food processing applications. Their robust construction allows them to withstand rigorous use without compromising performance, which is why they are favored by professionals. The increasing focus on health and safety standards across industries is expected to boost demand for stainless steel blades, solidifying their position in the market.

High Carbon Stainless Steel Double Edges Blade:

High carbon stainless steel blades combine the beneficial properties of both carbon and stainless steel, resulting in a blade that is exceptionally sharp and durable. Their ability to resist wear and tear, coupled with excellent hardness, makes them ideal for demanding applications, particularly in surgical and industrial fields. The increasing adoption of high-precision tools in surgeries has spurred market growth, as these blades provide the necessary sharpness and reliability for intricate procedures. As industries continue to prioritize precision and quality, the demand for high carbon stainless steel double edges blades is anticipated to rise significantly.

Ceramic Double Edges Blade:

Ceramic double edges blades are becoming increasingly popular due to their remarkable sharpness and resistance to corrosion. These blades are ideal for cutting soft materials such as fruits and vegetables, as they do not impart metallic taste or odor. The lightweight nature of ceramic blades also reduces hand fatigue during extended use, which is particularly advantageous for professionals and home cooks alike. However, the brittleness of ceramic materials necessitates careful handling to prevent chipping. As consumers become more health-conscious and eco-aware, the demand for ceramic blades is expected to surge, particularly in the culinary sector.

Titanium Double Edges Blade:

Titanium double edges blades offer unparalleled strength and durability, making them an excellent choice for heavy-duty applications. Their lightweight nature combined with high corrosion resistance allows these blades to perform exceptionally well in challenging environments. Furthermore, titanium blades are less likely to dull quickly compared to traditional steel blades, leading to reduced maintenance efforts. The growing interest in outdoor and camping activities has also contributed to the demand for titanium blades, as outdoor enthusiasts seek durable tools that can withstand harsh conditions. The outlook for this segment remains positive as industries continue to explore alternatives to traditional metal blades.

By Application

Industrial:

The industrial application segment of the double edges blade market is substantial, driven by the need for efficient and precise cutting tools in various manufacturing processes. Industries ranging from automotive to textiles rely on double edges blades to enhance operational efficiency and product quality. These blades are critical in assembly lines, where speed and precision are paramount. As industries continue to automate and innovate, the demand for high-performance double edges blades that can withstand heavy usage is expected to grow. Moreover, advancements in blade technology, such as improved coatings and materials, are likely to further enhance performance, making these blades indispensable in industrial settings.

Household:

In the household segment, double edges blades are essential tools utilized in a myriad of everyday tasks, such as cooking, crafting, and general maintenance. The versatility of these blades makes them attractive to consumers who value multifunctionality in kitchen and tool accessories. Increased home cooking trends, especially during the pandemic, have led to a surge in the sales of kitchen-related tools, including double edges blades. As consumers invest in quality tools to enhance their cooking and crafting experiences, this segment is poised for growth. Moreover, the rise of DIY projects has augmented the demand for reliable cutting tools, reinforcing the importance of household double edges blades.

Commercial:

The commercial sector significantly contributes to the demand for double edges blades, particularly in food service, hospitality, and construction industries. In commercial kitchens, chefs rely on high-quality double edges blades for preparing food efficiently and safely. The need for precision and durability in these environments necessitates blades that maintain sharpness and hygiene standards. In construction, double edges blades are used for various cutting tasks, making them essential tools for contractors and builders. As the commercial sector continues to expand and evolve, the demand for specialized double edges blades that cater to specific applications is likely to grow, driving market trends.

Surgical:

The surgical application of double edges blades is critical, as these tools must meet stringent safety and precision standards. In surgical settings, high-quality blades are essential for performing delicate procedures with accuracy. The rise in surgical procedures globally, fueled by advancements in medical technology and an aging population, is leading to increased demand for specialized surgical blades. Manufacturers are focusing on producing blades that offer enhanced sharpness, reduced friction, and biocompatibility, ensuring optimal outcomes in surgical interventions. This segment is projected to witness significant growth as healthcare providers continuously seek to improve patient outcomes and adopt the latest surgical innovations.

Crafts:

The crafts application segment of the double edges blade market encompasses a wide array of uses, from scrapbooking to woodworking. The increasing popularity of DIY crafts and home-based creative activities has spurred the demand for versatile cutting tools that can handle various materials. Crafters appreciate double edges blades for their ability to provide clean, precise cuts, which is essential for achieving professional-grade results in creative projects. As crafting communities grow and evolve, manufacturers are developing specialized blades tailored for specific crafting needs, further expanding their market potential. The segment is anticipated to grow as more consumers engage in artistic hobbies and seek quality tools to aid their creative expressions.

By Distribution Channel

Online Retail:

The online retail segment for double edges blades has experienced significant growth due to the increasing reliance on e-commerce platforms for purchasing everyday products. Consumers appreciate the convenience of shopping online, which allows them to compare prices, read reviews, and access a wider range of specialized products. E-commerce giants and niche online retailers have expanded their offerings, providing customers with various brands and blade types. Furthermore, the rise of social media marketing has created brand awareness and guided consumer decisions, positively impacting online sales. As digital shopping trends continue to rise, the online retail segment is expected to contribute approximately 30% of the total market share by 2035.

Specialty Stores:

Specialty stores play a crucial role in the distribution of double edges blades, offering customers expert advice and personalized service. These stores typically focus on specific product categories, allowing consumers to choose from a curated selection of high-quality blades tailored to their needs. Customers often prefer shopping at specialty stores for products where they seek professional insights and recommendations. Moreover, specialty retailers frequently stock unique or hard-to-find blade types that may not be available in broader retail channels. As consumers continue to value expertise in their purchasing decisions, the specialty store segment is anticipated to maintain a steady growth trajectory in the coming years.

Supermarkets/Hypermarkets:

Supermarkets and hypermarkets are significant distribution channels for double edges blades, as they cater to a vast consumer base by providing a wide range of household and industrial tools. The convenience of one-stop shopping attracts consumers who prefer to purchase multiple items during a single visit, including blades for various applications. These retail formats often feature promotional offers and discounts, enhancing their appeal to budget-conscious shoppers. As the popularity of home improvement projects and DIY crafts continues to rise, supermarkets and hypermarkets are expected to increase their inventory of double edges blades to accommodate growing consumer demand. However, competition from online channels may challenge their sales growth.

Direct Sales:

Direct sales channels, including manufacturers and distributors selling directly to consumers, are gaining traction in the double edges blade market. This approach allows consumers to access high-quality products while often benefiting from cost savings by eliminating intermediary fees. Direct sales representatives provide personalized service, which builds trust and fosters customer loyalty. These channels are particularly effective in niche markets where customers seek specialized products and expert guidance. As more companies explore direct sales strategies to enhance customer engagement and streamline distribution, this segment is likely to see ongoing growth in the coming years, making quality blades accessible to a broader audience.

Others:

The 'Others' category in the distribution channel segment encompasses various unconventional sales methods, including trade shows, flea markets, and local artisan markets. These channels provide unique opportunities for consumers to discover innovative products and connect with local makers. While smaller in scale compared to primary retail channels, these distribution methods foster community engagement and support local economies. As consumers increasingly prioritize sustainability and support for local businesses, demand for double edges blades sold through these channels is expected to grow. This segment may not dominate the market; however, it plays a vital role in diversifying distribution options and enhancing product accessibility.

By Material Type

Metal:

The metal segment is the most significant portion of the double edges blade market, primarily driven by the widespread use of steel blades in various industries. Metal blades, particularly those made from carbon and stainless steel, are favored for their strength, durability, and ability to maintain sharpness under rigorous conditions. These blades are used extensively in industrial, surgical, and household applications, making them indispensable to numerous sectors. Innovations such as high-carbon stainless steel are further enhancing the appeal of metal blades, as they offer improved performance and longevity. As a result, the metal material type is expected to maintain its dominance in the market over the forecast period.

Ceramic:

Ceramic blades are gaining increasing recognition in the double edges blade market due to their unique combination of sharpness and resistance to corrosion. These blades are known for providing clean cuts without imparting flavors or odors, making them especially popular in culinary applications. Additionally, ceramic blades are lightweight and require minimal maintenance, which appeals to both professional chefs and home cooks. However, their brittleness requires careful handling to prevent chipping. As consumer preferences shift towards healthier and more efficient cooking tools, the demand for ceramic double edges blades is anticipated to grow, particularly in the culinary sector.

Titanium:

Titanium blades are regarded highly for their exceptional strength and lightweight characteristics, making them ideal for applications that require both durability and ease of use. These blades exhibit excellent corrosion resistance, allowing them to perform well in adverse conditions. Their robust nature minimizes the risk of dulling, which is advantageous for users requiring reliable cutting tools in the field. The increasing popularity of outdoor activities and camping is driving demand for titanium blades, as outdoor enthusiasts seek versatile tools that can withstand challenging environments. As the titanium segment continues to evolve, it is expected to contribute significantly to the overall growth of the double edges blade market.

Others:

The 'Others' category in the material type segment includes a variety of composite and advanced materials that are engineered for specific applications. These materials often combine different properties to enhance performance characteristics, such as sharpness, durability, and weight. As technology advances, manufacturers are developing innovative blade materials that push the boundaries of traditional blades, meeting the evolving demands of consumers. This segment is expected to see gradual growth as more industries adopt advanced materials for specialized applications. Additionally, the increasing focus on sustainable materials in product development may lead to the emergence of eco-friendly blade options within this category.

By Region

The North American region holds a significant share of the double edges blade market, driven by robust industrial growth and a strong focus on healthcare innovation. The demand for high-quality cutting tools in sectors such as manufacturing and healthcare continues to rise, with the market expected to expand at a CAGR of around 5.8% during the forecast period. The presence of key players in the region, coupled with the increasing adoption of advanced technologies in blade manufacturing, contributes to the overall growth in this market. Moreover, the growing trend of DIY projects among consumers has further fueled the demand for versatile double edges blades in North America.

Europe is another crucial region for the double edges blade market, characterized by a high demand for precision cutting tools across various applications. The market in Europe is heavily influenced by stringent regulations in the medical and food industries, which necessitate the use of high-quality surgical and food-grade blades. The European market is projected to grow at a CAGR of 5.5%, as consumers increasingly prioritize durability and safety in their cutting tools. Additionally, the rise in e-commerce and specialty retail has enhanced product accessibility, allowing consumers to explore a wider array of double edges blades tailored to their specific needs. Together, North America and Europe are expected to account for over 55% of the global market share by 2035.

Opportunities

The double edges blade market is poised for extensive opportunities as consumer preferences evolve and industries seek more efficient cutting solutions. The growing trend towards sustainability and eco-friendly products presents a unique opportunity for manufacturers to innovate and develop blades made from renewable materials or those that promote minimal waste. Consumers are increasingly interested in sustainable practices, and companies that can align their product offerings with eco-conscious values stand to gain a competitive advantage. Additionally, the expansion of e-commerce platforms has opened up new markets for blade manufacturers, enabling them to reach a global audience and diversify their customer base.

Furthermore, advancements in technology, such as the integration of smart features in cutting tools, are creating new opportunities for market growth. As industries embrace automation and smart solutions, there is potential for the development of high-tech double edges blades that enhance user experience and improve efficiency. Manufacturers can explore the incorporation of sensors and connectivity features that enable real-time monitoring of blade performance, allowing users to make informed decisions about maintenance and replacement. This innovative approach to product design presents significant growth potential for companies willing to invest in research and development and adapt to emerging consumer trends.

Threats

Despite the promising growth prospects of the double edges blade market, several threats could impede progress. One significant challenge is the intense competition among manufacturers, which often leads to price wars and reduced profit margins. The influx of low-cost imports from emerging markets has further intensified this competitive landscape, making it difficult for established brands to maintain market share without compromising on quality or price. Additionally, fluctuating raw material prices can impact manufacturing costs, creating uncertainty in pricing strategies for companies. Manufacturers must navigate these challenges by focusing on product innovation and differentiation to sustain their market position.

Another threat facing the double edges blade market is the potential for regulatory changes concerning safety and environmental standards. As governments worldwide increasingly prioritize consumer safety and environmental sustainability, manufacturers may be required to comply with stricter regulations. This could necessitate significant investments in research and development, which may not be feasible for all companies, particularly smaller players. Moreover, shifts in consumer preferences towards alternative cutting solutions, such as electric or specialized cutting tools, may pose long-term risks to the traditional double edges blade market. Companies must remain vigilant and agile to adapt to these evolving trends and regulatory landscapes.

Competitor Outlook

• Stanley Black & Decker
• DeWalt
• Wüsthof
• Victorinox
• Fiskars Corporation
• Blades Direct
• Gerber Gear
• Wüsthof-Trident of America, Inc.
• Cutting Tool Engineering
• Zelco Industries, Inc.
• Exacto
• Olfa Corporation
• Tramontina
• Boardwalk
• Wiss

The competitive landscape of the double edges blade market is characterized by the presence of numerous well-established players and innovative newcomers. Market leaders such as Stanley Black & Decker and DeWalt have a significant influence due to their expansive product portfolios and strong brand recognition. These companies continuously invest in research and development to enhance their product offerings, ensuring they stay ahead of the curve in an evolving market. Additionally, mergers and acquisitions among key players have contributed to increased market consolidation, allowing companies to leverage shared resources and expertise to innovate effectively and improve operational efficiency.

Moreover, emerging companies are redefining the competitive landscape by offering niche products tailored to specific industries and applications. For instance, specialty brands that focus on surgical or high-precision blades are gaining traction as healthcare providers seek reliable and high-quality tools for their practices. These niche players often emphasize quality over quantity, creating a loyal customer base through exceptional product performance and service. As new entrants continue to challenge established brands, competition within the double edges blade market is expected to intensify further, prompting all players to focus on differentiation strategies to capture market share.

Key companies such as Wüsthof and Victorinox are well-known for their heritage and craftsmanship in producing premium double edges blades. These brands have successfully positioned themselves as leaders in the culinary market by emphasizing quality, tradition, and performance. Their commitment to innovation, including the development of new materials and designs, has allowed them to stay relevant in a competitive environment. Additionally, the increasing consumer interest in cooking and home-based culinary activities serves as a growth driver for these brands, as they cater to an audience that values high-quality tools for their culinary endeavors. The ongoing emphasis on quality and craftsmanship will likely further bolster their market positions in the coming years.

• 1 Appendix

  • 1.1 List of Tables
  • 1.2 List of Figures

• 2 Introduction

  • 2.1 Market Definition
  • 2.2 Scope of the Report
  • 2.3 Study Assumptions
  • 2.4 Base Currency & Forecast Periods

• 3 Market Dynamics

  • 3.1 Market Growth Factors
  • 3.2 Economic & Global Events
  • 3.3 Innovation Trends
  • 3.4 Supply Chain Analysis

• 4 Consumer Behavior

  • 4.1 Market Trends
  • 4.2 Pricing Analysis
  • 4.3 Buyer Insights

• 5 Key Player Profiles

  • 5.1 Wiss
    • 5.1.1 Business Overview
    • 5.1.2 Products & Services
    • 5.1.3 Financials
    • 5.1.4 Recent Developments
    • 5.1.5 SWOT Analysis
  • 5.2 DeWalt
    • 5.2.1 Business Overview
    • 5.2.2 Products & Services
    • 5.2.3 Financials
    • 5.2.4 Recent Developments
    • 5.2.5 SWOT Analysis
  • 5.3 Exacto
    • 5.3.1 Business Overview
    • 5.3.2 Products & Services
    • 5.3.3 Financials
    • 5.3.4 Recent Developments
    • 5.3.5 SWOT Analysis
  • 5.4 Boardwalk
    • 5.4.1 Business Overview
    • 5.4.2 Products & Services
    • 5.4.3 Financials
    • 5.4.4 Recent Developments
    • 5.4.5 SWOT Analysis
  • 5.5 Tramontina
    • 5.5.1 Business Overview
    • 5.5.2 Products & Services
    • 5.5.3 Financials
    • 5.5.4 Recent Developments
    • 5.5.5 SWOT Analysis
  • 5.6 Victorinox
    • 5.6.1 Business Overview
    • 5.6.2 Products & Services
    • 5.6.3 Financials
    • 5.6.4 Recent Developments
    • 5.6.5 SWOT Analysis
  • 5.7 Gerber Gear
    • 5.7.1 Business Overview
    • 5.7.2 Products & Services
    • 5.7.3 Financials
    • 5.7.4 Recent Developments
    • 5.7.5 SWOT Analysis
  • 5.8 Blades Direct
    • 5.8.1 Business Overview
    • 5.8.2 Products & Services
    • 5.8.3 Financials
    • 5.8.4 Recent Developments
    • 5.8.5 SWOT Analysis
  • 5.9 Wüsthof
    • 5.9.1 Business Overview
    • 5.9.2 Products & Services
    • 5.9.3 Financials
    • 5.9.4 Recent Developments
    • 5.9.5 SWOT Analysis
  • 5.10 Olfa Corporation
    • 5.10.1 Business Overview
    • 5.10.2 Products & Services
    • 5.10.3 Financials
    • 5.10.4 Recent Developments
    • 5.10.5 SWOT Analysis
  • 5.11 Fiskars Corporation
    • 5.11.1 Business Overview
    • 5.11.2 Products & Services
    • 5.11.3 Financials
    • 5.11.4 Recent Developments
    • 5.11.5 SWOT Analysis
  • 5.12 Stanley Black & Decker
    • 5.12.1 Business Overview
    • 5.12.2 Products & Services
    • 5.12.3 Financials
    • 5.12.4 Recent Developments
    • 5.12.5 SWOT Analysis
  • 5.13 Zelco Industries, Inc.
    • 5.13.1 Business Overview
    • 5.13.2 Products & Services
    • 5.13.3 Financials
    • 5.13.4 Recent Developments
    • 5.13.5 SWOT Analysis
  • 5.14 Cutting Tool Engineering
    • 5.14.1 Business Overview
    • 5.14.2 Products & Services
    • 5.14.3 Financials
    • 5.14.4 Recent Developments
    • 5.14.5 SWOT Analysis
  • 5.15 Wüsthof-Trident of America, Inc.
    • 5.15.1 Business Overview
    • 5.15.2 Products & Services
    • 5.15.3 Financials
    • 5.15.4 Recent Developments
    • 5.15.5 SWOT Analysis

• 6 Market Segmentation

  • 6.1 Double Edges Blade Sales Market, By Application
    • 6.1.1 Industrial
    • 6.1.2 Household
    • 6.1.3 Commercial
    • 6.1.4 Surgical
    • 6.1.5 Crafts
  • 6.2 Double Edges Blade Sales Market, By Product Type
    • 6.2.1 Carbon Steel Double Edges Blade
    • 6.2.2 Stainless Steel Double Edges Blade
    • 6.2.3 High Carbon Stainless Steel Double Edges Blade
    • 6.2.4 Ceramic Double Edges Blade
    • 6.2.5 Titanium Double Edges Blade
  • 6.3 Double Edges Blade Sales Market, By Material Type
    • 6.3.1 Metal
    • 6.3.2 Ceramic
    • 6.3.3 Titanium
    • 6.3.4 Others
  • 6.4 Double Edges Blade Sales Market, By Distribution Channel
    • 6.4.1 Online Retail
    • 6.4.2 Specialty Stores
    • 6.4.3 Supermarkets/Hypermarkets
    • 6.4.4 Direct Sales
    • 6.4.5 Others

• 7 Competitive Analysis

  • 7.1 Key Player Comparison
  • 7.2 Market Share Analysis
  • 7.3 Investment Trends
  • 7.4 SWOT Analysis

• 8 Research Methodology

  • 8.1 Analysis Design
  • 8.2 Research Phases
  • 8.3 Study Timeline

• 9 Future Market Outlook

  • 9.1 Growth Forecast
  • 9.2 Market Evolution

• 10 Geographical Overview

  • 10.1 Europe - Market Analysis
    • 10.1.1 By Country
      • 10.1.1.1 UK
      • 10.1.1.2 France
      • 10.1.1.3 Germany
      • 10.1.1.4 Spain
      • 10.1.1.5 Italy
  • 10.2 Asia Pacific - Market Analysis
    • 10.2.1 By Country
      • 10.2.1.1 India
      • 10.2.1.2 China
      • 10.2.1.3 Japan
      • 10.2.1.4 South Korea
  • 10.3 Latin America - Market Analysis
    • 10.3.1 By Country
      • 10.3.1.1 Brazil
      • 10.3.1.2 Argentina
      • 10.3.1.3 Mexico
  • 10.4 North America - Market Analysis
    • 10.4.1 By Country
      • 10.4.1.1 USA
      • 10.4.1.2 Canada
  • 10.5 Middle East & Africa - Market Analysis
    • 10.5.1 By Country
      • 10.5.1.1 Middle East
      • 10.5.1.2 Africa
  • 10.6 Double Edges Blade Sales Market by Region

• 11 Global Economic Factors

  • 11.1 Inflation Impact
  • 11.2 Trade Policies

• 12 Technology & Innovation

  • 12.1 Emerging Technologies
  • 12.2 AI & Digital Trends
  • 12.3 Patent Research

• 13 Investment & Market Growth

  • 13.1 Funding Trends
  • 13.2 Future Market Projections

• 14 Market Overview & Key Insights

  • 14.1 Executive Summary
  • 14.2 Key Trends
  • 14.3 Market Challenges
  • 14.4 Regulatory Landscape

Segments Analyzed in the Report

The global Double Edges Blade Sales market is categorized based on

By Product Type

• Carbon Steel Double Edges Blade
• Stainless Steel Double Edges Blade
• High Carbon Stainless Steel Double Edges Blade
• Ceramic Double Edges Blade
• Titanium Double Edges Blade

By Application

• Industrial
• Household
• Commercial
• Surgical
• Crafts

By Distribution Channel

• Online Retail
• Specialty Stores
• Supermarkets/Hypermarkets
• Direct Sales
• Others

By Material Type

• Metal
• Ceramic
• Titanium
• Others

By Region

• North America
• Europe
• Asia Pacific
• Latin America
• Middle East & Africa

Key Players

• Stanley Black & Decker
• DeWalt
• Wüsthof
• Victorinox
• Fiskars Corporation
• Blades Direct
• Gerber Gear
• Wüsthof-Trident of America, Inc.
• Cutting Tool Engineering
• Zelco Industries, Inc.
• Exacto
• Olfa Corporation
• Tramontina
• Boardwalk
• Wiss