E*thirteen Helix R Guidering(3mm Offset)3-Bolt 34t Bronze

e*thirteen Helix R Guidering - 34t 11/12-Speed 3mm Offset SRAM 3-Bolt DM Bronze. Helix R SRAM Direct Mount Chainrings offer a true upgrade solution for SRAM 3-Bolt MTB crank users (including DUB) to achieve cross compatibility with both SRAM and Shimano 11