chain-ring Wolf Tooth Wolf Tooth Direct Mount Chainring - 42t, RaceFace/Easton CINCH Direct Mount, Drop-Stop, 10/11/12-Speed Eagle and Flattop Compati part name: chain-ringpart make model: Wolf ToothWolf Tooth Direct Mount Chainring - 42t, RaceFace/Easton CINCH Direct Mount, Drop-Stop, 10/11/12-Speed Eagle and Flattop Compatibike part approved: