CLEAN AND FRESH WATERA rabbit drinker includes a drinker, a T-pipe, a spring. The design of the drinker nozzle is for rabbits to drink clean and fresh water directly, very safe and healthy and can prevent some diseases. EASY TO INSTALLYou only need to connect it to the soft tube of the water pipe with an inner diameter of 8mm under low water pressure.The rabbit waterer has a spring-loaded design, suitable for cages of different diameters, can be freely adjusted on the shelf and firmly fixed, anti-rollover, simple installation. DURABLE AND NON-TOXICwhich does not rust and resists biting. Soft and smooth surface, wont scratch your pets mouth. Good structure design, removable bottom parts for easy cleaning, can keep fountains clean and sanitary rabbits, ferrets, chinchillas or other rodent animals to drink water. Can be used with a variety of wire cages. Specification: Material: Plastic + Iron Tee Connector Size: Approx. 4.1 x 2.5cm/1.6 x 1inch Tee Connector Hole Diameter: Approx. 8mm/0.3inch Package List: Pack of 20 x Rabbit Drinkers (20 x nipple, 20 x T-connector, 20 x spring) Note: 1. Please allow 0-2cm error due to manual measurement. Thank you for your understanding. 2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.