ainhue AQ37 Auto Retractable Box Cutters Utility Knife

This AQ37 utility knife has a retractable blade and quick change mechanism. It includes 10 extra blades and is designed for cutting various materials.

• The description claims one-second blade changes using a press-able, protruding clip.
• The description claims the blade retracts when the slider button is released.
• The description claims the knife can cut through materials like cardboard, carpet, drywall, rope, vinyl, leather, and flooring.
• The description claims the knife never needs sharpening.