Shimano Tourney FC-A070/A073 Cranksets FEATURES: 7/8-Speed compatible SG-X Steel chainrings Square taper JIS Fixing bolts not included SPECS: Number of Chainrings: Triple Crank Length (mm): 170 Chainline/Hub Compatibility: 130 Hubs , 135/142 Road Disc Hubs > 415 mm Chainstay Pedal Spindle: 9/16" Crank Intended Use: Road Rings: 30/39/50 , 50/39/30 Spindle Interface Type: Square Taper JIS Drivetrain Speeds: 7 , 8 Chainring BCD: Riveted BB Included: No