`- Oval shape for greater climbing power and improved rear traction\n- 7075-T6 aluminum direct mount ring to fit Race Face Cinch system splined cranks \n- Narrow-wide teeth prevent chain drop, updated tooth profile runs quieter \n- Compatible with 9-12 speed chains, allowing a 1X set up on most any drivetrain\n- Installs with a common Park BBT-22 tool