Allows water to be supplied by bottle (any type of neck). Very easy to install. Supplied as a set of 4, with drinking-trough fixing plate and bottle-holding rod.Did you know? A rabbit drinks between 50 and 150 ml/kg/day. This varies according to diet and temperature. If your rabbit eats pellets and hay, it will need more water than if it eats vegetables. For your rabbit's well-being, only give him water. Milk is strongly discouraged.