Handy Safety Knife Ring Knife 12 Pcs ORIGINAL METAL 8Aluminum ring. 3 4" straight steel blade. Ring type knife can be used to cut twine, ribbon, plastic strapping, pallet wrap, tape, cardboard or light gauge wire. Also used extensively in the food service industry from harvesting to packaging, shipping and warehousing. For many types of jobs, it can increase productivity and reduce the risk of repetitive motion injuries. Ring size 8. 12 pieces per box.