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610903
Product SN ：610903
For : City bike
Chainring : 42T/44T
Ouler ring : alloy Anodized / steel ED BK / painted
Ring Fixalion : interchangebike
Arm Finish : Polish silver / BK anodized
Crank Material : 6061 alloy forged
L : 175/170/165/152mm
BCD : 104mm