SRAM X-Sync wide-tooth, narrow-tooth chainring technology provides maximum chain controlX-Range gearing technology gives you more range and a smoother gear progression, so youâre always in the right gearLaser-etched chainring finish is more durableImproved aerodynamics for time trial and triathlon8 bolt direct mount for new Red and Force AXS cranksetsDirect Mount50TGrey12spNarrow/WideUPC/EAN/GTIN: 710845825743