SRAM X-Sync 2 Eagle Steel Direct Mount Chainring 30T Boost 3mm Offset. The X-SYNC 2 Eagle steel chainrings are the perfect replacement ring for the cost-conscious riders with added durability of steel. The longer positive-rake tooth shape has been designed to work with Eagle chains to increase chain retention and overall pedaling efficiency while decreasing friction noise and wear.Stamped Steel ring constructionEagle technology provides an expanded optimum gear range for 1x drivetrainsX-SYNC 2 chainring design increases chain retention wear life and reduces friction and noiseDesigned to be used with Eagle 12-speed chainsSRAM Direct Mount Compatibility