Sugino Single Speed Arm Set 165mm Black 130mm BB Shell Width: Square TaperChainring BCD: 130mmChainrings: No ChainringsCrank Color: BlackCrankarm Length: 165mmCrankarm Length: 165mmCrankset BCD: 130mmCrnk Clr: BlackSpin: Not ApplicableSpindle Interface Type: Square Taper JISSpindle Length: 103,110mmWeight: 458g