Adams Driveshaft custom makes these driveshaft using only the best components made by two American Companies, Spicer and Neapco. We Start out installing the Strongest Solid U-joints and use the Strongest castings of Components possible. Then we use D.O.M Seamless tubing that we back up with a Lifetime Warranty on our Tubing and Welds if you break them due to torque. Check out the TJ Rubicon in the pictures of this item it has the same type of driveshaft in it and it has been put through every test possible with out any issues at all.