ITEM NAME:Crank Arm Bottom Bracke 1 Pair Bike Axle Bolt Screw Capless Bicycle Key newAT3C.With plastic seal, no separate crank cap needed. 1 pair X Crank Bolts. Bicycle universal, with good quality. Suitable for square crankset & BB, specification M8 15. Material: Steel. Length: 2.4cm.
