Wave RingThe Wave ring is the next evolution of the critically acclaimed Bling Ring. With offset teeth profiling this chain ring holds the chain snug whilst allowing for mud clearance and less friction. Available in SRAM Direct mount - Sram GXP direct mount, Race Face Cinch, 104 BCD and 110 BCD. 100% made in the USA.features:- Available in 28-42t even sizes- 51mm chainline (68/73mm BB) & 56mm chainline (83mm BB)- Compatible with 8-11 speed drivetrains.