It"s ball storage! Any questions? The 4-Tier Ball Rack is made from 1-inch thick chrome-plated steel and has four levels of storage, enough for 20 volleyballs. It also has a triangular base for additional stability. Casters make it easy to move from the gym to the locker room. Perfect for game time or practice day. Convenient storage device for easy ball retrieval * Made from 1-inch chrome-plated steel * Holds 20 offical-sized volleyballs * Triangular base for additional stability * Casters provide mobility * 42.5W x 18.5D x 52H inches