Shimano Tourney FC-TY501 cranksets deliver reliable, precise DUAL SIS shifting for MTB. Precision indexed shiftingWide compatibility with multiple components in 6,7, and 8-speedsQ-factor: 185.5mm Number of Chainrings: TripleColor: Black , SilverCrank Length (mm): 175Pedal Spindle: 9/16Crank Intended Use: MountainChainline/Hub Compatibility: 135/142 MTB HubsRings: 48/38/28Spindle Interface Type: Square Taper JISDrivetrain Speeds: 6 , 7 , 8Defined Color: BlackChainring BCD: RivetedBB Included: No