Shimano Tourney FC-TY501 cranksets deliver reliable, precise DUAL SIS shifting for MTB. Precision indexed shifting Wide compatibility with multiple components in 6,7, and 8-speeds Q-factor: 185.5mm Chainguard model ADDITIONAL INFORMATION - Number of Chainrings Triple - Chainline/Hub Compatibility 130 Hubs , 135/142 Road Disc - Hubs > 415 mm Chainstay - Spindle Interface Type Square Taper JIS - Chainring BCD Riveted - Color Black - keyword search EFCTY501C888CSB - Crank Length (mm) 170 - Crank Intended Use Mountain - Pedal Spindle 9/16" - Rings 48/38/28 - Drivetrain Speeds 6 , 7 , 8 - Defined Color Black - BB Included No