Sram Chain Ring MTB X-SYNC Eagle DM 6 OFF 12 Speed SteelFeatures: X Sync 2 Chainring Design Increases Chain Retention, Wear Life And Reduces Friction And Noise. Designed To Be Used With Eagle Chain X SYNC 2 X Sync 2 Eagle Is The Next Evolution Of Sram X Sync Technology. The Aggressive Teeth Design Provides Better Chain Retention For A Smoother, More Efficient Pedal Feel. With A Focus On Long Wear Life, The X Sync Eagle Design Reduces Friction And The Accumulation Of Mud, Grit, And Grime. SPECIFICATION