Yosoo 10PCS/LOT Mini Hanging Buckle Spring Backpack Clasps Climbing Carabiners Metal Hook EDC Keychain Camping Bottle Hooks Quickdraw Paracord Tactical Survival Gear for Outdoor Hiking Material: well made aluminium alloy,no nickel plating or rolling,water mill craft Suitable for using with key ring, umbrella rope,parachute cord or other EDC items Easy to operate with the built-in spring Size: about 1"/2.54cm,round opening diameter is about 0.2"/ 0.5cm, 550 LB parachute umbrella rope can pass through the middle hole Bearing: maximum tensile force is about 15 kg/34lb. Color: Black, Silver, Gray.(Be sent at random)