The Lemforder Ball Joint Kit - 136021 is a comprehensive set of products designed for maintaining and repairing a car's ball joint system. The kit includes various components such as ball joints, bushings, bolts, and other necessary hardware to ensure proper functioning of the ball joints. These parts are essential for connecting the steering knuckle to the control arm, allowing for smooth and precise steering of the vehicle. The kit is suitable for a wide range of car models and is a cost-effective solution for ball joint maintenance and replacement.