Finger-fitting Ring Knives are designed to cut twine, plastic strapping, pallet wrap, tape, cardboard, even light-gauge wire; to prune small branches; and to harvest various vegetable and fruit crops quickly and safely, while reducing the risk of repetitive-motion injury. The original ring knife consists of an aluminum band, a hardened-steel blade, and two nickel-plated band-to-blade rivets. Also available are vinyl-bladed, safety-tip metal-bladed, and safety-tip vinyl-bladed versions.