Details: Model No: FC-M5100-1 Series: Deore M5100 Series Chain line: 52mm Chainring combination: 30t, 32t Crank fixing bolt included Gear arms: 4 P.C.D.: 96mm Rear speeds: 10/11 Q-factor: 178.5 Chainring included: Yes Compatibility: The Shimano Deore FC-M5100 crankset is compatible with the following: Bottom Bracket: Shimano Hollowtech II bottom brackets Chain: HG 10-speed, HG 11-speed Chainring: Shimano Deore M5100 chainring