This Adjustable Deck Clamp and Hanger attaches to your deck rail so that you can position hanging feeders, plants or decorative items at the perfect height for viewing. The adjustable clamp fits any size flat deck rail while the 16" hanger arm is especially ideal for bird feeders. A patented locking hook keeps the feeder secure. The Clamp and Hanger set also rotates to any direction. With its galvanized steel construction, it can endure any weather and stand the test of time. 46" long, 1" diameter.