I didn't buy them here because I found another source where they were cheaper, but I had a few problems.1. The clamps that came with it didn't work with my 2007 NNBS 5.3L Sierra, I had to reuse the stock clamps2. The landing was very close. I had to sharpen my ears a bit to allow them to slide over the clips3. Even though I greased all the faces and slide bolts, they squeak until warm. However, they brake better than standard pads. I've paired them with some perforated and slotted rotors.