SZHOWORLD 10PCS/LOT Mini SF Spring Backpack Clasps Climbing Carabiners EDC Keychain Camping Bottle Hooks Paracord Tactical Survival Gear Classic simplicity clasp mini spring buckle hanging quickdraw metal keychain EDC backpack clasp Mini style can be used with a key ring / umbrella rope to the flashlight and other items for EDC. Material: aluminium alloy, no nickel plating or rolling,water mill craft Size: about 2.5cm, at its widest point 1cm, hole diameter 0.5cm. Opening width of 3mm Bearing: maximum tensile force is about 15 kg