ROTOR Chainring Q-Rings Mono Direct Mount Sram BB30

How does it work ?The Q-Rings reduce the detrimental effect of the dead point due to their oval shape. The crown is at its lowest level when the dead point arrives, which makes it possible to pass it less forcefully, more quickly, more flexibly. As soon as the pedal goes above neutral, the height of the Q-Ring increases, and therefore has the biggest lever arm when your muscles can deliver their maximum power. Features : Aluminium 7075-T6 OCP3 constructionSpeed compatibility : 10 and 11 speed Only for mono chainring Offset 0mm Compatibility Direct Mount Sram BB30 Weight:40g (32T)