HIGH-CARBON STEEL: single-edge razor blades are made in the USA of high-carbon steel for long-life and durability PRECISION-HONED: sharpened edge designed for clean accurate cutting and scraping smooth surfaces ALL STEEL CONCTRUCTION: high-carbon steel blade is steel backed for extra rigidity. Each blade is individually wrapped for safety COMPATIBILITY: fits Ivy Classic razor blade scraper 11156 and all single-edge razor blade tools. Ideal for scraping and cleaning paint and labels from glass, tile and metal SPECIFICATIONS: Blade thickness: .009", contains: 100 individually wrapped blades