Description: Double buckle design more firmly fixed. Hygienic and use. the pet licks the ball to the top the water is exposed and the water does not move when the ball is not licked. Transparent bottle allows easy checking of water level. Suitable for Rats Guinea Pigs squirrels rabbits ferret chinchilla and so on. Specification: Material:Stainless Steel+ Pipe Length:6.5cm/ 2. L Size(Dia.xH):Approx.5.8x23.5cm/ 2.28x9.25inch Capacity:350ml Package Includes: Bottle Feeder Note: be filled with water otherwise it will leak due to internal pressure. Put the water bottle the water outlet it up and down several times to empty the air at the front of the water outlet. In the first few minutes the natural water drop is normal. When the pressure inside and outside th reaches a balance point it will stop naturally. Due to the manual measurement there is a slight difference between the size from the above and the actual item. Becauseof the displaying and lighting effects monitor settings etc.therecould be a little color difference acceptable please kindly note.