Wiss® Safety Utility Knife, 5/8 in Blade Length, 0.15 in Blade Width, Auto Retract Blade, Steel Blade, Automatic Blade Change Method, 3 Blades Included, Yes Replaceable Blade, Foldable, 6-3/4 in L Handle, Steel Handle, 7 in OAL, 1-3/4 in OAW, 0.87 in Overall Depth.The Crescent® Wiss® auto retracting safety utility knife retracts automatically when cut is complete, even if slider is in forward position. This feature cannot be overridden under normal use, reducing workplace injuries. This knife accepts all standard utility knife blades with a quick blade change, and comes with three black oxide coated blades. Wiss® WKAR2 Safety Utility Knife, 5/8 in Blade Length, 0.15 in Blade Width, Auto Retract Blade, Steel Blade, Automatic Blade Change Method, 3 Blades Included, Yes Replaceable Blade, Foldable, 6-3/4 in L Handle, Steel Handle, 7 in OAL