Description:
CNC machined with high precision for burrfree finish and standard threads, fits perfectly to keep water, dust and other elements out.
Crank fixing bolt is used to fix the the crankset and crank of the chain wheel, suitable for mountain bikes and road bikes.
This crank cover can distribute the pressure of the nut over the part being secured, reducing the chance of damage to the part. The fine design with precise machining, fits crank perfectly and offers professional fixation of crank.
Easy to install by using the British 3/8inch (10mm) allen wrench(not included).
Material: aluminum alloy
Outer diameter: about 28 mm/1.1 inches
Size:　M15*11mm; M18*11mm; M19*11mm; M20*11mm
Package includes:
1x Bike Crankset Arm Bolt