Application: Works well on virtually all class 1-3 cars, light-duty trucks and farm machinery. Fits for Ford F-150/350 Chevrolet 1500/3500 Ram 1500/3500, etc. Fitment: Use with 1.0" to 1.25" U-Joint bearing cups. Used with up to a 1/2 inch impact wrench. Function: Allows disassembled the tightest u-joint in minutes and reduce the risk of damage to the drive shaft, yokes, joints or bearing cups. Features: Eliminates dangerous vise, sleeve or hammering methods. Supply ultimate brute strength for disassembling even the most seized u-joints. Superior Material: .