Flat feeding surface is a favorite of cardinals. Large 1.5 gallon capacity. Rotating port ring regulates seed flow. Drainage holes in tray get rid of water. Threaded adapter allows an additional feeder to be mounted on top. Collet fastener makes cover easy-on, easy-off for quick feeder refills. Disassembles for thorough cleaning. Made of tough UV-stabilized polycarbonate and sturdy 1" O.D. rust-resistant pole. Includes ultimate auger for easy installation. Broadly curved squirrel guard tray prevents squirrels from climbing onto feeder. Squirrel proof when placed 8' from trees or buildings. Dimensions: 69" H x 18.5" diameter when assembled. By Droll Yankees.