Carli's adjustable stainless endlinks are machined out of the highest quality 17-4 stainless material making them a lifetime product. Each endlink goes through a five stage machining process. At the end of each endlink is a 1/2 inch F.K. nylon lined bearing to replace the much weaker factory ball and socket design. Note for 2010-2013 Ram. We need to know if you have a 10mm or 12mm end link. The way you can verify this is if you take an end wrench and measure the nut that compresses the rubber end link bushing. It will be 10mm if it takes a 15mm socket and it will be 12mm if it takes an 18mm socket. Please verify this before ordering.