These drinkers are designed to fit on the outside of the cage or aviary and has grooves on either side of the base to hold it firmly and securely in place. It also has a hook on the retaining ring that fits over the upper clear part of the drinker which gives the feeder a secure fixing.
Overall height 15cm
Widest part of the drinker is 7cm
Depth (front to back) including font 11cm