The Milwaukee® 48-22-1901 folding utility knife is designed to activate the blade 3X faster than a 2-handed opening knife the Fastbackž¢ Utility Knife features a one handed blade opening system for easy activation. The tool free blade change offers less down time in the field while a thin body design allows the user to easily store the knife in their pocket. The integrated gut hook and wire stripper also increase the overall utility of the knife.A must have for any auto glass technician! Uses standard utility blades with a quick release option for easy change out. Flip close cover for protection and line cutting slot. Great for prep work and a must have for anyone using a auto glass line cutting system.