Interlock Safety Utility Knife with Self-Retracting Round Point Blade, 5.63" Metal Handle, Red Orange Spring-loaded blade retracts automatically when pressure on slide button is released. Machine screw firmly holds knife body together - screwdriver required for blade change. Contoured handle and textured die-cast body for slip-resistance. Accepts standard round-point utility blades. Integrated blade storage in handle. Lanyard hang hole for easy transportation and storage. Replacement Blades: 11-987, 11-988, 11-800, 11-700, 11-938, 11-914, 11-921. Our Price Buys you: 1