Wehrs Machine Suspension Tubes feature a unique hex machined on each end to make adjustments a breeze using wrenches versus channel locks or pliers. They are constructed of DOM steel with bungs welded on each end and are laser engraved with length and thread direction. The perfect solution for pull bars, panhard bars, 4-link rods, tie rods, or just anywhere you need a dependable link tube. Wehrs Machine suspension tubes are available in 5/8 or 3/4 in. diameters with many lengths to choose from.