The Insight Clean Water Silo Waterer remains on the outside of the cage while
the extending water cup goes between the bars and into the cage. The Base screws
onto the cage to gaurantee a secure fit on horizontal or vertical barred cages.
This Waterer has a patent pending valve to prevent leaks. The perfect waterer
for everyday use with no mess and easy refill. Dishwasher safe and available in
green, yellow and blue.