Master Mechanic, 4 Pack, Zinc Pro Heavy Duty Retractable Blade Utility Knife, Accepts All Utility Blades, Zinc Body, Overlap Nose For Protection, 3 Locked Blade Positions, Blade Storage In Handle, For Cutting Drywall, Fiberglass, Wood, Plastic, Cardboard, 2 Blades Included, Includes 4 Each TV #704-496 Knife, Clam Shell.