corona sram x sync 2 direct mount boost 3mm offset nx eagle steel 12vEagle Technology creates the smoothest, quietest, most durable, and efficient drivetrains we have ever made. The radically new look and feel of our X SYNC 2 Eagle chainring is the direct result of SRAM drivetrain engineers studying the performance and wear characteristics of thousands of X SYNC chainrings. The longer tooth shape with positive ramping is designed to work perfectly with the new Eagle chain to increase chain retention and overall