Folding Road Bike Crank Arm 165MM 130BCD 45T/47T/53T/56T/58T Single speed Chainwheel Square hole Fixed Gear Bicycle Crankset track Chainring

Description

Name:Square hole Crankset

Material: AL6061 Aluminum Alloy Crank

Crank: 165MM

BCD:130MM

Color :Black Silver

Chainring size:45T,47T,53T,56T,58T

BCD: A circle surrounded by five mounting holes in a normal distribution. The diameter of this circle is BCD. For folding bikes, the standard common formulation by Shimano, SRAM, and Dahang is 130mm.