Pet Water DispenserMaterial: The main part is made of durable PP resin, which is safe and non-toxic, Rollerballs are made of high-quality stainless steel. One-piece nozzle designhard to break off, The stainless rollerball can make pets drink fresh water. Safe And Leakproof: Food grade stainless steel balls and spring interior provide better leakage protection,Its stainless steel balls block the tip of the Copper Tube and allow water to pass through only when your pet pushes it. Simple And Easy To Use Just unscrew the knob and then use the knob to fix the bottle body and the cage together. Easy to fill water with the top cap and no need to take off the bottle, the capacity is enough for a healthy and well-being of water intake for your pets. water dispenser capacity500ML Necessary For Every Pet Owner: As a pet owner, you probably know that you can't leave home for many hours as your pet may run out of food -and what's more important- water!