Direct mount chainrings for SRAM cranks with 8-bolt mounting replace your existing spider and chainring with one clean looking, lightweight, and stiff piece of machined billet. Compatibility:- These direct mount chainrings will replace your existing chainring and spider or replace the direct mount chainring for SRAM AXS cranksets and other cranks that use the 8-bolt mounting. Most SRAM cranksets have traditionally used a 3-bolt mounting, but the 8-bolt mounting has always been used on the Quarq power meter cranks. Now some non-power meter cranks like SRAM AXS use the 8-bolt mounting. - All SRAM Direct Mount DUB road cranksets use the 8-bolt mounting standard. These cranksets use either 107 BCD or 94 BCD, any of those cranksets with a removable spider use the 8-bolt mount.- Wolf Tooth's patented Drop-Stop® wide/narrow tooth profile for the ultimate chain retention and mud-shedding ability- 6mm offset - Chainline 45mm- Use Drop-Stop B for all 9, 10, and 11spd chains or 12spd SRAM Eagle, SRAM Flattop, Campagnolo, KMC, Connex or - Wippermann chains- Recommend the use of a clutch-style rear derailleur for the best chain security- Use the included custom T20 bolts. Torque 4Nm with T20 toolSpecifications:- Weights: 38T-89g- Material: 7075-T6 aluminum- Included: set of eight custom T20 stainless steel bolts