Alignment shops told me camber was not adjustable on my Jeep ZJ. These shims showed up on a search and I ordered the 1 degree for one side, and the 1/2 degree for the other. Easy to remove the hub to get to the installation point for the shim. My front wheels now stand 90 degrees to level ground. The "twitchy" steering improved 80% with the camber shims, and with a proper toe adjustment, it drives like new. If you have negative camber, this is the answer.