These direct-mount rings feature an 8-bolt mount for SRAM cranks. They feature the patent-pending Drop-Stop asymmetrical tooth design, providing the highest levels of wear resistance, mud protection, and chain retention. Drop-Stop chainrings are designed for use with 1x9, 1x10, 1x11, and 1x12 drivetrains. They're compatible with all 10-, 11-, and 12-speed chains, except Shimano 12-speed chains. For Shimano 12-speed chains, Wolf Tooth's Shimano 12-speed-specific chainrings must be used. If using a 9-speed drivetrain, use a 10-speed chain for improved chain retention. They're compatible with SRAM AXS cranksets and other cranks that use 8-bolt mounts. Made from long-lasting 7075-T6 aluminum. Features a 6mm offset and 45mm chainline. Recommended for use with a clutch-type rear derailleur. Install the Wolf Tooth rings using the eight bolts provided with your crankset.