ITEM NAME:Cycling Bike Axle Bolt Screw Capless Bicycle Key Crank Arm Bottom Bracke 1Pair3C Features:.With plastic seal, no separate crank cap needed. Bicycle universal, with good quality. 1 pair X Crank Bolts. Suitable for square crankset & BB, specification M8 15. Material: Steel. Length: 2.4cm.
