This water dispenser allows you to connect the water bottle directly to the pet’s cage. This cage water dispenser is connected to the outside of the cage so your pet can drink from water directly from the bottle. water bottle adapter. This water dispenser allows you to connect a plastic water bottle directly to your pet’s cage. It connects to the outside of the cage. Using an adapter, you can tighten any which water bottle.The color greenStyle: adapter for double-headed water coolerWithout bottle on delivery