SRAM 34T DIRECT 6mm BLACK 12s X-SYNC EAGLE CFCold forged aluminum X Sync chainrings for 12 speed Eagle systems Available in Boost compatible 3mm spacing as well as standard 6mm X Sync 2 chainring design increases chain retention, wear life, and reduces friction and noise Eagle Technology creates the smoothest, quietest, longest lasting and most efficient drivetrains Sram ever made The longer, positive rake tooth shape has been designed to work perfectly with the new Eagle chain to increase chain