The Axler QRA-501S Quick Release Assembly gives you the freedom to remove your camera from a tripod, stabilizer, or support rig without having to spend time unscrewing it from the device. It includes a quick release adapter and Manfrotto 501PL style sliding camera plate for smooth and easy camera positioning. The plate includes 1/4"-20 and 3/8"-16 camera screws for use with a variety of cameras, and features three built-in bubble levels to assist with leveling. 1/4"-20 and 3/8"-16 threaded holes on the underside of the adapter are provided for mounting to tripods, stabilizers, or other support rigs. Additionally, a 3/8"-16 screw and hex key are included which give you the flexibility to mount the adapter to any 3/8"-16 threaded hole.