Zeluga ZL101 safety vinyl shark knife and zL138 100 Pc. utility hook blade with wall mountable dispenser value pack. Ergonomically designed utility knife contains a low friction lock screw for quick and easy blade change without needing tools. Hinged aluminum body has a storage area for extra blades for easier blade installation. The Shark Knife uses utility or hook blades and comes with a plastic holster with a belt clip. Fits most standard utility, concave and hook blades. Easy blade change with a quick rotating wheel. For use with hook or utility blades (blades not included). Comes with a bonus compact holster. Two magnets points. It cuts and trims roofing materials, linoleum, carpet, fabric, cartons and sheet metal. The hook blades is made from professional grade SK5 carbon steel for enhanced durability and superior edge holding ability. Can be mounted to securely install on a wall for easy access with 100 count dispensor. Blade length 1-15/16″ and thickness 6mm. Blade shape prevents damage to surfaces below. The blades fit most standard utility knives.