ITEM NAME:2pcs cycle bike bicycle capless bottom bracket axle crank arm bolts m8 screwJ№[ Description: Brand new and high quality Features: 1. Material made from stell, surface with electrosilvering, waterproof. 2. Suitable for square crankset & BB, specification M8*15. 3. Bicycle universal, with good quality. 4. With plastic seal, no separate crank cap needed Type:crank bolt Color:silver & black Material:steel QTY:2pcs Package Include:2pcs crank bolts.Suitable for square crankset & BB, specification M8 15. With plastic seal, no separate crank cap needed. Type:crank bolt. Bicycle universal, with good quality. Material:steel.