STANLEY® Utility knife have durable all-metal knife body construction. Machine screw firmly holds knife body together. Screwdriver required for blade change. Contoured handle and textured, die-cast body for slip-resistance. Interlocking nose design helps secure blade and helps prevent body separation. Comes with hang-hole for adding a wrist strap or lanyard. Auto-retracting blade: spring-loaded. Retracts when slide button is released. Blades included (11-987): 1. Works with most standard utility blades.