Cinch Oval rings help you put down the watts in the best part of our pedal stroke on your 10 11 or 12 speed drivetrains. Ovals provide enhanced traction control when compared to conventional round rings particularly in high torque low cadence riding scenarios. We&';ve got your timing clocked to improve on that grueling climb. Or simply make your personal pedal-shuttle a little more bearable. And by simply flipping the ring it becomes Super Boost compatible without losing the same excellent timing to help you maintain traction during the toughest part of your pushOptimized pedal stroke1x drivetrain variable width tooth profile stops dropped chainsSuper Boost compatibleWear resistant 7075 Aluminium TECH SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Tooth Count 28 Drivetrain Speeds 12 Round or Oval Oval Offset 3 Material Aluminum Defined Color Black Direct Mount Type Direct Mount CINCH Chainring Size 28T