Oval direct mount single chainring compatible with Sram crankset and Boost 3mm frame (148mm rear axle) and 52mm chainline.Compatibility.-For Boost frames:3mm offset and 52mm chainline or drivetrain compatibility with Super Boost bikes.-Attachment via 3 bolts on the rear of the spider near the axle.Use the same 3 original Sram screws to attach the Wolf Tooth chainring.-Chain Compatibility:Drop-Stop ST for Shimano Hyperglide+ 12-speed and KMC 12-speed chains.-With Praxis Works mountain cranks using 3mm offset.-You will need clearance between the chainring and chainstay for a chainring two teeth larger than the elliptical chainring (maximum diameter is that of a chainring two teeth larger).-If using a 9-speed drivetrain, use a 10-speed chain (shifts and works well on a 9-speed drivetrain and adjusts the ring tighter for better chain retention).Not compatible.-NOT compatible with SRAM 8-bolt direct mount cranksets.-NOT compatible with other chains.Chain Compatibility:Drop-Stop ST for Shimano Hyperglide+ 12-speed and KMC 12-speed chains.Recommendations.-The use of a clutch style rear derailleur is recommended for best chain security.-A T25 Torx wrench is required to remove the bolts holding the chainring or spider to the crank.-An L-wrench works best as the crank shaft may contact a bushing adapter and prevent proper engagement.-Use the same 3 original Sram bolts to secure the Wolf Tooth crankset.Features.-Use:Mtb.-Mounting:Direct Mount.-Ovality:10%.-Chain Compatibility:Drop-Stop ST.-Weight according to sprocket:28t - 60g 30t - 68g 32t - 74g 34t - 83g 36t - g.-Material:Aluminum 7075-T6.-Made:in USA