The Lixit Glass Tube Water Bottle has a large nozzle measuring at 5/8” is designed for large birds, rabbits, ferrets, guinea pigs, and chinchillas. This bottle kit contains steel mounting brackets and holder and is easy to install with easy to attach hardware that just mounts onto cage. It’s quick to remove for refilling and cleaning. Lixit’s Glass Tube Water Bottle keeps your pet’s water fresh and clean without the hassle of a bowl. Touch ball at the end of the tube releases water and creates a vacuum. Made with a stainless steel drinking tube and non-toxic USDA approved rubber stopper.