This Mounting Arm accessory makes it easy to mount your BirdCam or PlantCam to a pole, post, or tree. Easy setup. No tools required. Mounts on any bird feeder pole with an outside diameter of 0-1/2-1-1/2-inches, or to any post, wall, or tree. Has a unique "elbow" joint that adjusts the mounting arm to angles of -60, -30, 0, 30 and 60 degrees. The "ball joint" on the mounting arm connects to the standard tripod mount at the bottom of the BirdCam allowing the BirdCam to swivel 360 degrees. Dimensions: 2.25 by 3 by 23-1/2. Black. Mounting arm only; BirdCam and PlantCam not included.