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: 185.5mmItem Specifications-Spindle Interface Type:Square Taper JIS-BB Included:No-Drivetrain Speeds:6-Chainring BCD:Riveted-Defined Color:Black-Chainline/Hub Compatibility:135/142 MTB Hubs-Pedal Spindle:9/16"-Crank Intended Use:Mountain-Rings:42/34/24-Color:Black, Silver-Number of Chainrings:Triple-Crank Length (mm):170 mm-Drivetrain Speeds:7-Drivetrain Speeds:8