Designed for Race Face CINCH cranks with removable spiders. This chainring features the patent pending asymmetrical Drop-Stop tooth design for the best in wear life mud clearance and chain retention.Drop-Stop chainrings are designed for use with 1x9 1x10 1x11 and 1x12 drivetrainsDrop-Stop FT is compatible with all 10- 11- and 12-speed chains (including SRAM Flattop 12-speed chains) with the exception of Shimano 12-speed chainsShimano 12-speed chains require the use of Wolf Tooth's Shimano 12-speed specific chainringsIf using a 9-speed drivetrain use a 10-speed chain which will provide a tighter fit for better chain retentionMade from 7075-T6 aluminum for long lifeUse of a clutch-style rear derailleur is recommended