The SP Tools 68600A Air Hammer Ball Joint R&R Tool saves time by utilizing an air hammer to remove and replace ball joints. Save about an hour of labor time on many Honda/Acura models, as well as other vehicle makes. The tool has two main parts that attach to the air hammer: a remover and installer. The remover easily fits over the lower end of the ball joint to drive the old ball joint out of the steering knuckle. The installer has been designed to fit around the upper portion of the steering knuckle enabling a straight push for the new ball joint. The installer couples with one of three different sizes of installer heads that drive in the new ball joint without damaging it.