This is a ball and joint assembly replacement for use with several types of lawn and garden equipment, including lawn tractors. The ball and joint assembly is an important part of the steering system in the machine. It helps to secure tie rod ends and drag links. If there is damage to the ball and joint assembly, it can cause a range of problems with the steering. This can make it impossible to properly operate the machine. Damage to the assembly could occur for a range of reasons. In some cases, it could simply be years of wear and tear plus corrosion. Other times, it could be damage caused while operating the machine. Issues with the ball and joint assembly should be repaired right away. This is a genuine OEM replacement part that can work for many machines, such as lawn tractors, lawn mowers, and snowblowers. It is compatible with a range of brands including Yard-Man, Troy-Bilt, Yard Machines, Craftsman, Bolens, Murray, Cub Cadet, Toro, and MTD.