Description: CNC aluminum alloy construction, high strength. Suitable for square hole crankset & bottom bracket. Install with M8 allen wrench. With plastic seal, no separate crank cap needed. Specification: Material: Aluminium Alloy, Plastic Length: 18mm / 0.71inch Diameter: 8mm / 0.31inch Color: Black and Silver Package Includes: 10 Pieces Bike Crank Bolts
