Ceramic blade, pen style box cutter. Auto-retractable for extra safety. Blade is non-conductive, anti-magnetic, never rusts, and is chemically inert. Double-sided, hand-sharpened ceramic blade designed to reduce injuries by incorporating safer rounded tips. Features simple, no-tool blade change. Patented handle with rubberized slider button limits the amount of exposed ceramic blade. Blade automatically retracts back into housing when slider button is released. Double-sided ceramic blade lasts up to 10 times longer than steel. Includes 1 double-sided ceramic blade (equivalent to 20 steel blades).