This Link Bracket is uniquely designed to mount either a Uniball (RE, JJ, or Summit), or a large Heim (the Evo's fit) on the inside frame rail. It is adjustable in the fact you decide just what you are going to use before you weld for the joint span. It is made entirely out of .375" (3/8") A50 Steel Plate with the inner/frame side pin plate acting as a stiffening plate. This has a 10 degree mounting angle with a 3/8" outrigger to the rear of it for additional strength. You will like these! They are sold in pairs. We make the assumption that you have already boxed your frame in the mounting area. These are for those of you that are VERY hard on equipment and want to do their 4 link suspension right!