ITEM NAME:1x Crank Arm Bottom Bracke 1 x Bike Axle Bolt Screw Capless Bicycle KeyGTxwB.AU.With plastic seal, no separate crank cap needed. Bicycle universal, with good quality. 1pcsX Crank Bolts. Suitable for square crankset & BB, specification M8 15. Material: Steel. Type: M8 15.
