These are my "Extreme Series" traction bars. They use 2.63" ballistic joints which are forged, rebuildable, greaseable and a lifetime guarantee against breaking. They use 2" OD X 0.250" thick wall DOM tubing and weld on brackets. I recommend these for towing, sled pulling and off-road use or anything over 65" long. These bars have left and right hand threads on each end for easy adjusting and setting preload. Comes in a raw finish.