The top choice of many fortune 500 companies for reducing injuries, reducing accidental product damage and eliminating loose razor blades in the workplace. The klever concept is disposable when the blade dulls, simply dispose and grab a new one. This eliminates changing razor blades, having loose razor blades around the workplace all while increasing productivity. A smarter, safer way to cut PC klever cutter is great for cutting boxes, plastic packaging, tape, stretch wrap, twine, plastic bands, bubble wrap, packages, cartons and more. Also works great for opening plastic "clamshell" packaging. 5-pack. Warning: This product contains chemicals known to the state of California to cause cancer and birth defects or other reproductive harm.