Shimano Tourney FC-TY501 cranksets deliver reliable, precise DUAL SIS shifting for MTB. FEATURES: Precision indexed shifting Wide compatibility with multiple components in 6,7, and 8-speeds Q-factor: 185.5mm Chainguard model SPECS: Number of Chainrings: Triple Color: Black Chainline/Hub Compatibility: 130 Hubs , 135/142 Road Disc Hubs > 415 mm Chainstay Pedal Spindle: 9/16" Crank Intended Use: Mountain Crank Length (mm): 170 or 175 Rings: 42/34/24 or 48/38/28 Spindle Interface Type: Square Taper JIS Drivetrain Speeds: 6 , 7 , 8 Chainring BCD: Riveted BB Included: No