M18 M19 M20 bicycle Crankset Bolt crank Arm Fixing BB Axis Screw 18mm 20mm Aluminum alloy MTB road bike
Note:Crank bolt have two size, one is M18 and one is M20, please pay attention to the size of the bolts.
We don't have a return policy, which means that items once sold are non-refundable.
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