Features and Benefits: * Stainless steel blade * Rust resistant * Fits all standard breakaway or snap off knives * 13 cutting segments for 13 new points * Card of 5 blades American Line’s snap off blade is stainless steel for long life and durability. Stainless steel provides rust resistance for long life. Each blade has 13 new points or segments allowing 13 brand new cutting points for extended like new use. Independent testing proves American Line snap off replacement blades have the best initial sharpness and durability of any blades on the market.