NEW Shimano FC-M315 Altus 36/22 7/8-Speed 170 mm Chainset - Black

Shimano

Hyperdrive SG-X chainrings for fast and smooth gear shifts 7/8-speed compatible steel chainrings For use with 123 mm square taper bottom brackets With a 51.8 mm (boost) chainline for use in conjunction with 148 mm O.L.D.