The Original one and only absoluteBLACK Premium Sram compatible Direct mount Boost 1X Oval narrow wide chainrings designed specifically to work with CN-M9100, 8100 & 7100 Shimano Hyperglide+ 12spd chain Only. 3mm offset. It is the most Premium oval chainring on the market with scientifically proven performance gains.
This oval chainring with 3mm offset converts any Sram crank into Boost setup. Boost and non-Boost Sram cranks are identical. All the offset is achieved by the chainring itself,

Compatibility - SRAM 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 and Long spindle BB30. BOOST148 bikes. Works ONLY with 12spd Shimano Hyperglide+ chain (HG+) absoluteBLACK Sram Oval Direct Mount Boost Chainring