SHIMANO FC-3403 Sora 50-39-30t 9spd 175mm 2-piece crank BB Shell Width: 68/70mmChain Compatibility: 9-SpeedChainring BCD: 130,74mmChainrings: 30/39/50TCrank Color: SilverCrank/FD Type: Road TripleCrankarm Length: 175mmCrankarm Length: 175mmCrankset BCD: 74/130mmCrnk Clr: silverPedal Spindle: 9/16"Rings: 30-39-50Spin: Not ApplicableSpindle Interface Type: Hollowtech IISpindle Length: 110mm