1pc M18 M20 bicycle Crankset Bolt crank Arm Fixing BB Axis Screw for shimano
Note:Crank bolt have two size, one is M18 and one is M20, please pay attention to the size of the bolts.
Material:Aluminium alloy
M20 fits for almost shimano bicycle like M4000 M590 M596 M661 SLX XT XTR ect
M18 compactible forProwheel forged crankset ect
Weight: M20 9g
M18 7g
Package include:1pc crankest bolt