Only compatible with CN-M9100, 8100 & 7100 Hyperglide+ 12spd chain due to different thickness and shape of the teethSpaced for Boost specific bikes and fat bikes (when reversed)Oval chainring for use with RaceFace Cinch system cranksCompatible with RaceFace Next SL, SIXC, and Turbine cinch cranksOval chainrings have been shown to improve traction and reduce leg fatigueIdeal for 1x 9/10/11 system and single speedsAdjustable clocking position11 percent ovality50mm chainline7075 Aluminum...