SHIMANO XTR FC-M970 Hollowtech II Crankset BB Shell Width: 68/73mmBB Thread Type: EnglishChain Compatibility: 9-SpeedChainring BCD: 104,64mmChainrings: 22/32/44TCrank Color: Black/SilverCrank/FD Type: Mountain TripleCrankarm Length: 175mmCrankarm Length: 175mmCrankset BCD: 64/104mmCrnk Clr: black/silverInterface: HT2Length: 175mmPedal Spindle: 9/16"Rings: 22-32-44Speed: 9spSpin: Not ApplicableSpindle Interface Type: Hollowtech IIWeight: 775g