Razor sharp blades cut easily through plastic, linoleum, shrubs, thick leather, all types of hoses, automotive belts, soft metal, tubing, pipe, dowels, hobby and craft items and more Heat treated and hardened carbon steel blades are stronger and last longer Includes 2 cartridges with 3 blades each, designed to slide directly into Multi-Cutter handle For use with Performance Tool 3-in-1 Multi-Cutter model W2045 .