The OLFA line of safety cutters represents the finest quality self-retracting knives available. The OLFA SK-9 Self-Retracting Safety Knife with Tape Slitter, is a versatile, heavy-duty safety cutter engineered to provide a lifetime of outstanding performance and safe operation. All components of the SK-9 are extremely durable. With an ultra-tough ABS Plastic Handle, and a blade slide that is gently curved. The SK-9 is designed for a comfortable grip. The back side of the SK-9 also features a finger groove to help securely hold the knife. An outstanding safety feature of the SK-9 is the self-retracting blade mechanism. The spring-loaded blade self-retracts into the handle the instant it loses contact with the material being cut. Users can select right or left-handed operation with a simple 180-degree flip of the blade. The blade channel and blade retraction spring system are designed with high-quality stainless steel, to eliminate rust and maintain spring tension. Another innovative feature of the SK-9 is the rounded metal tip that can serve as a tape slitter, screwdriver, staple remover, and more. A safe alternative to improperly using the blade on this cutter in the blade for these applications. In addition, the versatile SK-9 safety cutter can use 3 distinctly different blades, allowing for a wide range of applications. The dual-edged trapezoid OLFA blade is used for cutting cardboard, paper, and other packaging materials. It can also cut through dense materials like rubber belting, hosing, and more. The rounded tip dual-edged safety blade is widely used for opening corrugate cardboard containers. The blade is designed to prevent damage to the contents of a package while preventing puncture-related injuries. The OLFA hook blade offers numerous applications. Such as cutting shrink wrap or palette wrap, nylon banding, pressure-sensitive tapes, poly film, and electrical insulation. With the SK-9, changing blades is safe, simple and requires no tools: While securely holding the cutter, move the blade slide forward until the cross tabs align with the slots in the blade channel. Then lift the tab and carefully rotate the blade end to end. Or dispose of the blade in a container that’s approved by your facility. Slide the new blade into the blade channel until the hole in the blade aligns with the slots in the channel. Then, position the blade slide so the cross tabs fit into the slots in the channel, and the pin on the slide connects with the hole in the blade.