The original narrow-wide chainring for SRAM's direct mount system. Built for Boost bikes with a 3mm offset. Fits all direct mount SRAM DUB, BB30, and GXP cranks. Sizes: 28t (49g), 30t (50g), 32t (52g), 34t (66g), 36t (72g) Material: CNC-machined 7075 aluminum for long-term durability Finish: Anodized Chainline: 52mm, Boost148-specific, 3mm offset Compatibility: The SRAM 3-Bolt Round Chainring is compatible with the following crank arms: SRAM: AXS, XX1, XX1 Eagle, X01, X01 Eagle, GX Eagle, NX Eagle, SX Eagle, X1, X0, X9, X7, S2210, S1400, Descendant, Stylo, Truvativ AKA, and all DUB cranks Cane Creek eeWings. GXP, BB30, Boost148 Also compatible with Super Boost bikes using SRAM's SB+ Super Boost crank axle Not compatible with SRAM Flat Top or Shimano HG+ chains.