Wolf Tooth elliptical chainrings designed for Shimano direct mount cranksets. This chainring features the patented Drop-StopA(R) design for the best wear life, chain retention and mud clearance.Elliptical chainring shape provides better efficiency in the recovery zone, as well as increased traction thanks to consistent torqueDesigned for use with Shimano MTB cranksets such as XTR M9100, XT M8100, and SLX M7100Drop-Stop A chainrings are designed for use with all 9, 10, and 11-speed chains or 12-speed SRAM Eagle, KMC, Connex or Wippermann chainsNot compatible with 12-speed Shimano Hyperglide+, SRAM Flattop, or 12-Speed Campagnolo chainsMade from 7075-T6 aluminum for long life