I installed them on a 2012 Toyota Tundra with perforated and slotted Callahan discs. They were easy to install, except for the front where the brake line had to be disconnected from the caliper. I don't know why Toyota made a rigid link and not a hose. Disconnecting the brake line required bleeding the brakes after installing the parts. The pads are of high quality and the accessories supplied fit perfectly. Nothing creaks or rattles, the brakes work better than the original. I will buy them…