Save valuable work time with the Quick Change Retractable Utility Knife from Stanley. Change blades fast without the need for a screwdriver. This 6-3/8 inch utility knife cuts many types of materials including cardboard, drywall, plastic sheeting, leather and more. Front loading with retractable bladeBlade storage magazine in rearString cutting feature in body3 blade positions3 No. 11-921 blades included (2512-3357)Other replacement blades (2512-3704)Metal body6 in. handle length