The TRW Control Arm Kit - 138091 is a comprehensive set of products designed for use in cars. It includes various components that are essential for the proper functioning of the control arm in a vehicle. The kit contains a total of eleven items, including ball joints, bushings, and other related parts. These components are crucial for maintaining the stability and steering of a car, as well as ensuring a smooth and safe ride for the driver and passengers. The specific contents of the kit may vary, but they are all designed to work together to provide optimal performance and durability for the control arm. This kit is suitable for use in a wide range of car models and can be easily installed by a professional mechanic.