Small Automatic Pet Drinking Fountain Bottle For Squirrel Ferret Mice Ferret Description: Double buckle design, more firmly fixed. Hygienic, easy to clean and use. Ball valve design, the animal's tongue licks the ball upward, the water is exposed, and the water does not move when the ball is not licked. The transparent bottle allows easy control of the water level. Suitable for rats, degus and guinea pigs, squirrels, rabbits, ferrets, chinchillas and so on. Specification: Material: Stainless Steel+Plastic Hose Length: 6.5cm/2.56in Size S (Dia.xH): Approx 4.8x22.5cm/1.89x8.86in Capacity: 180ml Size L ( Dia.xH): Approx 5.8x23.5cm/2.28x9.25inch, Capacity: 350ml Package includes: 1 Piece Pet Water Bottle Dispenser Note: The plastice bottle needs to be filled with water. water, otherwise it will leak due to lack of internal pressure. Put the water bottle upside down to block the water outlet, shake it up and down several times to release the air in the front of the water outlet. In the first few minutes, natural water drop is normal. When the pressure inside and outside the bottle reaches an equilibrium point, it naturally stops. Due to manual measurement, there is a slight difference between the above size and the actual item. Because of display and lighting effects, monitor settings etc. might be a little color difference acceptable, please note.