The lightest and shallowest wheel in the performance line here gets the added benefit of disc braking the attack disc offers a tubeless ready 25mm cross section to support the trend toward wider road tires and also for cyclocross use ensuring a better tire profile and a more supple ride with the addition of point and shoot disc brake control this precision carbon wheel set is more than just light its stiff responsive and an absolute joy to ride specifications weight tubeless set 14