They are easy to do, Jack up the car(make sure it is stuck in place with parking brake or blocks), take of the wheel, use a 10 mm on the lower caliper screw, tilt it upwards, slip out pads, spray, reapply. If the pads dont quite fit, use a C-clamp to push the brake cylinder in a bit. Fairly easy. Took me about 15 min to dissassemble. Reassembly is faster but you have to wait for the stuff to dry for a lil bit.