Easton direct mount CINCH chainrings use a new narrow/wide design specifically tailored to road/cx/gravel applications. The individual teeth are tall and direction specific to create positive chain roller engagement which is critical for chain retention over rough terrain. Extra material has been removed from the teeth to reduce running noise at the extremes of the cassette and provide excellent mud shedding characteristics.The CINCH direct mount system provides weight savings and makes swapping chainrings fast and simpleDirectional tooth design provides exceptional chain retentionVariable tooth width47mm chainline with Easton 129mm spindle is optimal for 135/142mm rear hub spacingOptimized for 11-speed drivetrains though compatible with 9 10-speed chains as well as 12-speed Eagle 12-speed CampagnoloNot compatible with Flattop AXS or 13-Speed Campagnolo