This tube insert is designed to be used with a 3/4" heim joint in tubing with a 1" I.D. This tube insert differs from our standard insert because it has a larger O.D. (1 1/2") at the area to be welded, it is the perfect insert to use if you are using 1/4" wall or thicker tubing. It also has the added benefit of a machined hex making linkage adjustments a much simpler task. Tube Insert Related Parts Barnes is your one-stop shop for quality 4WD fabrication parts. Search our line of 3 link suspension kits and 4 link suspension kits, Heim joints and Heim joint kits, jam nuts, and high misalignment spacers for all the parts you need for your custom job. Call us with your questions at (828) 551-7616 or email email@example.com.