Description: Automatic Water Feeder: Designed stainless steel rolling beads, automatic water supply, and pet mouth licking will be the top of the ball bearing so that the water flows out. Premium and Reliable: Drinking water bottle is made of high quality ABS and stainless steel material, which is sturdy, durable, and not easy to overflow when drinking water. Easy Installation: Feature hole and detachable buckle, easily assemble and disassemble. Usage: The water feeder is suitable for small animals, hamsters, rabbits, squirrels, ferrets, bunny, hedgehogs, and cats. Suitable for Outdoor Indoor: A pet water bottle is perfect for outdoor activities and travel, make sure pets have plenty of water. Specification: Material: ABS, Stainless Steel Size Chart: 60ml: Total Height 9.5cm/3.74inch, Diameter 3cm/1.18inch, Bottle Height 5.5cm/2.17inch, Nozzle Diameter0.6cm/0.24inch 80ml:Total Height 13cm/5.12inch, Diameter 4cm/1.57inch, Bottle Height 9cm/3.54inch, Nozzle Diameter0.8cm/0.31inch 125ml:Total Height 18cm/7.09inch, Diameter 4cm/1.57inch, Bottle Height 12cm/4.72inch, Nozzle Diameter0.8cm/0.31inch 250ml:Total Height 21cm/8.27inch, Diameter 5cm/1.97inch, Bottle Height 16cm/6.30inch, Nozzle Diameter0.8cm/0.31inch Package Includes: 1Hamster Cage Drinking Water Bottle(2 Pack) Note: Please allow slightly errors due to manual measurement and different monitors.