I built my own, 3/4" conduit and all thread that will fit inside the conduit, Welded a nut to one conduit and the other conduit I have a washer welded to it...So from left to right, its conduit with a welded nut, all thread (threaded into nut-about 6-7", then a nut with a wing (so it can be tightened against the washer that is welded to the other piece of conduit, and about 6-7" of all thread inside the conduit. One end is attached to the bottom of the stabilizer jack with a piece of angle iron, and the other piece (say 4-1/2' to 5' away) is attached to the frame, front to back. There is just enough angle (from being parallel to the frame) that it keeps the movement from side to side down to a minimum...but front to back...is gone....I drop the stabilizer jack down to a piece of wood, then tighten the nut (with the wing) to the washer, couple of turns so its nice and tight, go all around the trailer and pretty soon its tite like a tiger....total cost is about 75 bucks, way cheaper than the 275 for two.