Milwaukee Tool's Self-Retracting Safety Knife, No. 48-22-1915, has two blade positions and a self-retract mechanism which allows the user to control blade exposure and automatically retract the blade when desired. For increased efficiency and productivity, the knife also features a tool free blade change for easy access to blades, on-board blade storage for up to five blades, as well as a wire stripper for up to 10ga wire. It will accept all utility blades, and comes with two carton blades with rounded tips to limit damage due to over cutting. The knife also has an all metal, light weight design for ultimate durability.