UNSUNG HERO.SRAM's X01 1x11 Chainring 94 BCD 30T-ashares all of the functionality and possesses the same tooth profile of XX1. It-aalso saves you a few bucks, as the 94mm BCD is easier to produce than XX1's 76mm BCD. Although a 30T is the smallest chairing allowed by X01's larger BCD, compared to the 28T of XX1, the convenient feature of being able to remove the ring without removing the crank is still present. FEATURESActual weight 52 grams94mm bolt circle diameter (Fits 94mm BCD spider only)X-Sync tooth profileCNC'd aluminumMade in Taiwan