Race Face 3-Bolt Direct Mount NW Ring. Features: 7075-T6 aluminum direct mount ring for SRAM GXP cranks with a removable spider Fits XX1, XO1, XO, X9, X7, S2210, S1400, and Truvativ AKA (GXP) Narrow-wide tooth profiling prevents chain drop without a chainguide Compatible with 9-12 speed chains, allowing a 1X set up on most any drivetrain Specs: Ring Type:single (anti-chain drop) Armx BCD:GXP direct mount Teeth:26t Color:black