The 150mm Ball Mount Set is designed to attach to adicam carts in order to support 150mm ball mount tripod heads. The set includes a 35mm tube, two brackets that secure the tube to your cart, a Horseshoe Mount, and a 150mm Bowl Plate. The Horseshoe Mount attaches to the top of the tube, and the bowl plate is installed into it. The weight capacity of the set is 66 lb.