Check the listing for details. WORKPRO 100-Pack/200-Pack Single Razor Edge Blades High Carbon Steel. Color: Silver, Condition: New. Listed at 15.99 USD. Premium High Carbon Steel: Constructed of high quality carbon steel for extra durability and long life, with HRC58~64 hardness, these scraper razor blades stay sharp longer compared to ordinary blades. Sharp Cutting Edge: WORKPRO single edge blades feature a sharp, long-lasting edge, delivering optimum cut performance. The steel backing provides a better feel and control, great for general scraping and cutting. Universal Razor Blades: The razor blades are single-edged with a size 1.53-inch length, 0.77-inch width and 0.009-inch thickness. These replacement blades are built to fit all standard razor blade scrapers and box cutters. Convenient Package: Each pack includes 100 scraper blades packed inside a transparent case for convenient blade storage or easy retail displays. All blades come individually wrapped and protected in a paper for added safety. Wide Application: These single edge razor blades are perfect for scraping and cutting projects, such as removing paint, labels, stickers and decals on tiles, glass windows and doors, or quickly opening packages.