Genuine AC Delco parts - they really are better than 99% replacement parts. Includes new spring clips and a SMALL amount of silicone grease, which really isn't enough when you're cleaning and lubricating the caliper slide pins like you should. are made of ceramic and easily last 50,000 miles. My rotors were still over the minimum thickness (marked on the side of the rotor cap) so they stayed on the car and I just replaced the pads. Jacking up the car and removing the wheel takes more time than the actual braking work. Only problem is I forgot to fit the rear wheels - I'm used to doing this less often but in this particular car for the same price they are worn out. Save money - the dealer charged me $700 to change the pads without changing the rotors, which is completely insane. According to GM, that's a 0.6-hour job. It took me an hour from opening the garage door to washing my hands afterwards, working at a very leisurely pace, extensive caliper cleaning and caliper oiling, cleaning brake dust from the inside of the wheels, etc.