These are the aztec campagnolo road insert brake blocks replacement pads for campagnolo brakes 2011 onwards 2011 brake pads can be distinguished from pre 2011 brake pads by the spring in the side of the system brake pad carrier made from aztecs finest braking compound offering you great braking power and durability in all weather conditions simple slide out and slide in pad replacement proven aztec groove system helps clear water and dirt from the pad surface