The driveshaft is a hollow tube that transmits an engine's power to the rear axle. Disassembled, it doesn't look like much. Here, we have a hollow aluminum tube, aluminum ends, universal joints, and the transmission yoke. Driveshafts are made from aluminum, steel, or aluminum/composite tube stock. The ends are pressed into the 1026 (steel) or T-6061 (aluminum) tube on a jig, then precision-welded to the tube. As you might expect, the quality from IED is impeccable.