Pet Water Bottle, FATPET 300ml Leak-proof Small Animal Water Bottle Mess Free Pet Water Fountain Red The smallr-sized nozzle is recommended for small animal, such as hamster, ferret, guinea pig, and so on It's can hang on your pet cage, and with screws, the bottle can be fixed in any place , such as walls, wood, etc The roller ball style nozzle is non-leakage and not rusting, can keep your pets' healthy Simple and easy installation. You can easily snap the water Bottle on or off for cleaning and refilling water Leak-proof nozzle/ not rusting / mess free / 300ml capacity /nozzle diameter: 10mm for smaller animals