This Mount is Unique. It is designed to have the strength to take a hardcore impact head on while protecting either a Uniball (RE, JJ, or Summit) or a large Heim (large enough to act as the 3rd link). 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 lower/upper pin plate acting as a stiffening plate. I think you will like them!