Compatible with a 3x8, 3x7, and 3x6 speed drivetrains, the SHIMANO TOURNEY TY crank delivers reliable, precise DUAL SIS shifting. 175mm Crank arm length 48-38-28T Charing size Light and reliable shifting Precision indexed shifting DUAL SIS Versatile performance Wide compatibility with multiple components 8/7/6-speed compatible 3 crank length specification available Quick and precise assembly Precise chain line control