Slice’s Auto-retractable utility knife gives you a long blade to cut through thick materials–including triple-walled cardboard–then pulls back to keep you safe when you’re done. We’ve responded to customer demand for a durable auto-retracting utility knife with our patented ceramic safety blade and a reliable glass-filled nylon handle. The included rounded-tip ceramic blade lasts up to 10x longer than steel and is safer to handle. Rotate the blade edge quickly and without tools to adjust for right- or left-handed use. As with all our ceramic blades, this auto-retractable knife blade is non-conductive, chemically inert and never rusts.