Lutz heavy-duty retractable utility knives are designed to be reliable. Die cast from zinc for optimum strength and durability- they are built to last a lifetime.
The Lutz #81 is primarily used in industrial applications. Diecast from zinc for maximum strength- this light-weight- easy-to-use- retractable utility knife is built to last. Each knife comes with 3 heavy duty replacement blades stored inside the knife.