A safer alternative to steel blade box openers. The ceramic blade will stay sharper longer than traditional blades. These are a great addition to the home, office or garage. They allow you to easily break down boxes with handling safety in mind. Dual ceramic blades with sliding guard. Two-position box top opener with metal guide. Bonus rear blade for general use. Knife Type: Retractable; Blade Material: Ceramic; Number of Blades: 2; Handle Material(s): ABS Plastic.