Roller spring system secures the blade in place and preventing movement. No tools required for fast blade change. 2 spare blades included in the internal blade compartment. Works with most standard replacement blades, including Gray part no 206-KBL (Amazon ASIN B08V74DVTC). 7¾" length Gray Tools heavy-duty retractable knife features a strong yet light zinc alloy body and super-sharp cutting blades. Each knife includes two spare blades.

Since 1912, people who do extraordinary work have been using Gray tools. Whether you’re a miner working miles underground or a mechanic working on a jumbo jet, we understand there are times you need extraordinary sizes, styles, shapes, and lengths to get the job done. Apart from offering a wide assortment of tools for nearly any industrial application, we have always stood behind our tools the same way you stand behind the quality of your work. We've spent over a century earning your trust - a trust that we value and have always supported with an unconditional guarantee. This utility knife is made in Spain and backed by a lifetime warranty.