Set carabiner clip locking carabiner keychain small black caribeener clips with D shape screw gate used for camping, hiking, kayaking and other outdoor activities. Specifications of the key carabiner: Material: Aluminum carabiner Length: 3 inch Width (at widest point): 1.6 inch Weight: 0.85 oz Diameter: 0.28 inch Caution: For your safety, the caribeaner clip is not recommended for use in mountaineering, rock climbing, ice climbing or other programs equipment. How to use the carabiner clips? Open the mini carabiner clip closure, attach things to the locking carabiners and turn the screw up. Rotate the screw, the D shape buckle and the locking mechanism of the small carabiner clips will make things securely attached. Remember to tighten the screw up to block the buckle of the keychain carabiner. Screw the caribiner tightly. Once you screw the mini locking carabiners, they will never unscrew themselves. Multiuses Use the mini carabiners to attach a portable case in your backpack when on travel or outing activities. Use the carabiner keychain to hang things: flashlights, extension cords, ropes, light chains, bottles, tools that can be connected to anything. Caribeener clips for keychains, keep your keys or gadget without the risk of falls, can also be used as floating key carabiner for boats, scuba diving accessories, etc. Locking carabiner heavy duty The tiny carabiner is an easy-opening threaded nut allows you to unlock security, a spring-loaded gate that allows you to quickly and safely attach to a wide range of fixing points.