* Fits to Raceface CINCH interface (ERA, ERA-E, NEXT R, NEXT SL, Turbine, Atlas, SIXC)* Learning from years of experience our tooth pattern has been optimised to increase longevity and performance in poor conditions* CNC machined in-house in UK from7075 T6 aluminium, anodised* 3mm / Boost Offset* Designed to work with 10, 11 & 12 speed chain types, excluding Shimano 12spd* Uses our same tried and tested tooth profile as our standard Narrow/Wide chainrings reviewed 10/10 by MBR