The JW® Clean Water Silo Bird Waterer is specially designed for your bird's well-being to provide a clean supply of water. Its convenient no-spill valve means no more water spills when removing the waterer for filling the outer chamber. Designed to fit all bird cages with vertical and horizontal bars with a simple screw-on design. Ships in assorted colors. Provides a fresh, reliable water source for your bird’s well-being For parakeets, canaries, cockatiels, and finches Fits securely on vertical and horizontal wire cages Easily remove for cleaning and refilling without spills Small: Dimensions: 5" x 2" x 11.25" Capacity: 60 ml Large: Dimensions: 5" x 2" x 14.5" Capacity: 100 ml