General Tools 855 Utility Knife, Slide Locking No tool belt is complete without a dependable utility knife, General Tools utility knives feature ergonomic handles, razor-sharp alloy steel blades and a three-position slide lock for handling the toughest applications Whether you're a carpenter, roofer, woodworker or carpet installer, this heavy duty utility knife will withstand all the rigors of a day's work This knife is great for cutting and scoring fiberboard, wallboard,matboard, cardboard, corkingboard, roofing,linoleum, carpet, plasterboard, veneers and other materials The blade retracts into handle for safety and opens instantly to any one of three cutting positions Comes with three replaceable heavy-duty alloy steel blades in the storage handle; Replacement blades availabe with General Tools Model #852-100