Open packages quickly and easily with this retractable utility knife Features a 10-blade chamber and ergonomic, rubber grip for comfort. Blade is retractable and refillable. To replace the blade simply press a button on the side, and it pops out. Clauss Art & Drafting Supplies part of a large selection of office supplies. Acme Auto-Load Retractable Utility Knife, 1in. Blade, Black/Gray is one of many Knives & Blades available through Office Depot. Made by Clauss.