Sram HS2 6 bolt Rounded Disc

The Sram HS2 disc has been designed to achieve a constant center of friction throughout the rotation, for reduced vibrations, consistent performance and quiet running.To meet UCI safety requirements, Sram rounded the edges of the discs so that they do not have a 90 u00b0 angle. This is to reduce the risk of injury in the event of a massive fall in a peloton.Details: 6 bolt mount Rounded edges UCI compliant Road and mountain bike compatible