This 90 bottle drain tree's arm segments interlock together for a firm fit to make a solid assembled unit. Its use is simple and it will help to streamline your bottle washing and sterilizing process. When you finish a bottle of wine or homebrew, rinse the bottle and put it on the bottle tree. The inverted bottles will completely drain into the drain tray/stand, drying quickly and completely. The tree rotate son its stand and is easily disassembled for storage between uses.