The Shimano FC-MT210 2-piece crankset is designed for 3x9 MTB drivetrains. It features HYPERDRIVE technology and SG-X chainrings for precise, reliable shifting. FEATURES: . HYPERDRIVE technology provides smooth and precise shifting performance for trail focused riders; Compatible with outboard 24mm bottom brackets (Bottom bracket sold separately); Anodized crank arms for extra durability; Compatible with HG 9-speed chains; For 50mm Chainline; 176mm Chainline; SPECS: . Number of Chainrings: Triple; Color: Black; Chainline/Hub Compatibility: 135/142 MTB Hubs; Pedal Spindle: 9/16"; Crank Intended Use: Mountain; Crank Length (mm): 170; Rings: 44/32/22; Spindle Interface Type: Shimano Hollowtech II; Drivetrain Speeds: 9; Chainring BCD: Riveted; BB Included: No;.