Ten Factory Chromoly driveshafts come fully assembled and are designed to handle and take abuse both on and off-road. Our driveshafts feature 4130 chromoly tubing for strength and durability, with 1310 or 1350 precision u-joints. Eletroically balanced to the highest tolerances, to provide a vibration free ride. Plus, Ten Factory driveshafts feature our Famous real world 10 year warranty. The best warranty in the buisness!