This is a Weld in Threaded Bung for your link suspension, this one is the big guy made for the bottom of the truck, the side thats going to see the dirt firsthand. We make these a little different that the rest, the way I want them to be, they allow for most of the heim to go into the tube itself so it is supported by both the bung and the tube. Although not Chromolly they are stronger when used like this. This is the left hand thread model for a 1.25" Heim Joint. It is a fair priced, reliable choice of Tube Insert for your truck. They are sold individually but we can fit a ton of them in a flat rate envelope!