Shimano Altus FC-M311 Square Taper Chainset

Shimano Altus FC-M311 Square Taper Chainset with Chainguard
Entry level 7/8-speed chainset offering slick hyperdrive shifting performance for off road enthusiasts
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