A tough squirrel proof dome to protect bird feeders and feeding stations from the ravages of squirrels and other climbing food stealers. Approximately 15" (38cm) in diameter, the dome is smooth and slippery. If squirrels (or rats) are attacking your bird feeders, this could be the answer.Features:- This version is designed for use on feeding poles, with adapters for 12mm, 22mm and 25.5mm poles. Works on feeder poles, shepherd's hooks, and pole feeding stations- The hole in the dome is approx 3cm, so it should fit over any hanging feeder with a hanger of that width or less- Stop squirrels from pinching bird feed.