This exceptional drive shaft features a carefully designed spring loading function, built into the hex shaft. The hex shaft is integral to its inbound yoke, meaning, the yoke and hex shaft are machined from one continuous piece of material. The hub bores are blind. Yokes are manufactured from AISI 4142 alloy steel; the pins and blocks are made from AISI 8620 alloy steel. The joints as well as the hex shaft are outfitted with Nitrile lubricant-retaining boots. The Cadmium plating provides corrosion resistance to areas not protected by boots. (Below image is partially exposed for a better view into the shaft and its components.)