Premium 1X Sram compatible Direct mount Oval chainring is designed for Sram cranks like Force and Rival where the spider can be replaced with a direct mount ring. Fits both GXP and Long spindle BB30 spindle cranks. Compatible with Sram Force 22 Force 1 CX1 Rival 22 Rival 1 S900 GXP and BB30 models. Also compatible with XX1 X01 X0 X9 X7 S2210 S1400 GXP and Long spindle BB30 models. Unique Patent Pending narrow-wide teeth profiles to keep your chain in place for minimum 12 months. Designed to handle mud and grass with ease