Stanley QuickChange 6-3/8 in. Retractable Utility Knife Gray 1 pk

The Stanley(R) 6-3/8 in. QuickChange(TM) Retractable Utility Knife allows blades to be changed quickly, with no screwdriver required. This knife features a three-position retractable blade slide, a swing-out blade storage magazine and an integrated string cutter that can be used even when retracted.
Handle is crafted from steel for strength and durability
Swing-out blade storage magazine
Store up to 5 blades in swing-out compartment in handle
Applications are cardboard, shrink wrap, tyvek, shingles, plastic sheeting and insulation