Amazon Basics Heavy Duty Retractable Auto-Load Ergonomic Utility Knife 3-Position

Professional quality: Heavy duty zinc-alloy utility knife with SK5 blade and rubber anti-slip cushion grip handle
Fully retracting and locking: Retractable and adjustable blade slides open to 3 different blade lengths for exact cuts and easily retracts to lock safely when not in use extra blades store easily inside body of knife
Easy change and quick release: Just extend the blade, press the button and reverse or switch. Comes with 4 heavy duty reversible high carbon SK5 blades with replacement designed storage built inside body of knife
Best for general and precision cutting: Slice through cardboard, carpet, drywall, rope, vinyl, leather, flooring, and wood use for box cutting, arts and crafts