PRODUCT DETAILS • RELIABLE & DURABLE. Retractable snap-off utility knife is sturdy and strong as it has stainless steel blades of high quality and ergonomic handle. Cuts sharp and rust resistant to be long lasting. • JUMBO & MINI SIZE. Two size cutters ready for all your cutting and trimming needs. Cutting moving boxes, carton, carpet, leather, cardboard, rubber, fabric, paper, tape, foam board, DIY projects, and more.  • COMFORTABLE GRIP. Professional box knives feature contoured grip handles to ensure strength, comfort, and maximum productivity. Suitable for office, school, warehouse, shipping, home improvement, hobby. LOCKING MECHANISM. Furnished with a 9 mm and 18 mm wide knife blade. Prevent blade slipping with the safety lock tab. Always keep your blade fresh and sharp by snapping off the blade for a new sharper cutting tip. EFFICIENCY. 13-position slide exposes variable cutters length. Easy load the next razor, always working with the sharpest edge. Compatible with 18mm refills blade.