Estone&reg; Carabiners Survival Knife Multi-function Outdoor Mountain Climbing Buckle This tool is the perfect merger of utility and convenience. It allows quick release for natural and effortless fastening and unfastening and has a locking mechanism. Tools snap into position when opening or closing and have an unmatchable feeling of quality. Adopts D style aluminum alloy polish Wearable and easily attachable to backpacks, key rings, belt straps, etc