Set the blade to any cutting depth with the OLFA 25mm NH-1 Rubber-Grip Ratchet-Lock Utility Knife. The ratcheting-lock system secures the blade with the turn of a wheel for extra heavy-duty applications including construction and remodeling. This utility knife is built for continuous hard work with a durable stainless-steel blade housing that maintains a long life of steady cutting. The anti-slip rubber grip adds ergonomic control in an acetone-resistant handle. This knife comes preloaded with a 25mm HBB Extra Heavy-Duty Ultra-Sharp Black Snap Blade that is up to 25 Percent sharper than standard silver blades. Each blade contains seven (7) cutting edges for efficient, volume cutting. A simple snap of the segment reveals a fresh edge. Full blade changes are quick and without need for additional tools. Accepts all OLFA 25mm blades including: HB Silver Snap Blades, HSW Saw Blades, and HH Hook Snap Blades.