Drive axle for XRAY adjustable drive shafts. Drive shaft length adjustment makes use of 4 different connecting opening positions at drive axle end to permit modifications to general driveshaft length. Backside wheel axle for large ball-bearings produced from world-renowned HUDY Spring Steel. Strategically machined for toughness and light weight without compromising power. The wheel axle is additionally hand ground for optimum precision to make certain an amazing, exact fit in suspension ball-bearings, guaranteeing perfect wobble-free fit and rotation. Heat treated for optimum energy, durability, minimal use, and extra-long lifespan.