RAZOR SHARP 18mm BLADE - Preloaded with LB Heavy-Duty Silver Snap Blade made from Japanese tool steel for unmatched sharpness and edge retention. The 18mm blade has 8 razor-sharp snap-off segments, great for industrial or construction applications. | STURDY HANDLE - Made from high-impact ABS plastic, the handle provides extra leverage for tough cutting projects. The stainless-steel channel keeps the blade firmly in place for safe operation. There's also a keychain/lanyard hole for tethering. | CUSTOM RATCHET LOCK CONTROL - Designed with safety in mind, our box cutter's ratchet-based locking system provides custom cutting depths. The blade slider has a wheel locking mechanism for unlimited positions when securing the blade in place. | MULTIPURPOSE HEAVY-DUTY DESIGN - The OLFA 18mm L-1 Utility Knife is perfect for tough cutting projects that require extra elbow grease. It delivers accurate cuts through drywall, roofing, flooring, rubber, gasket materials and more. | THE OLFA STANDARD - As the original inventor of the Snap-Off Knife, OLFA has maintained a standard of cutting excellence for our quality and durability. Pairing your OLFA 18mm Utility Knife with OLFA 18mm Blades will provide optimal results.