The Claris FC-RS200 Crankset features smooth shifting performance for road drivetrains, and a stylish appearance.Smooth shifting performance under various conditions. Uses a square taper bottom bracket. 43.5mm chainline / 153.7 Q-factor. Item Specifications: Chainring BCD: 110, Crank Intended Use: Road, Number of Chainrings: Double, Defined Color: Black, Crank Length (mm): 170 mm, Rings: 50/34, BB Included: No, Spindle Interface Type: Square Taper JIS, Pedal Spindle: 9/16", Color: Black, Drivetrain Speeds: 8, Chainline/Hub Compatibility: 130 Hubs,