Didn't wanna pay $350+ for an Artec truss. (even though it is a great product) so I made my own using some scrap I found at the steel yard. Was $30 for everything out the door. Started with a piece of 6x4x1/4 tubing, 1-1/4 x .250 dom, 3/4" fine thread tap, 3/4" hiems (from a project in 2012), 2ft of 3x3x1/4" tubing, a propane torch and a grinder. Then welded everything together. The double ended link you see is one that I threaded on each side then cut it in half to use as the uppers. I wanted to retain the radius arm setup I already had.