Oben's QRA-R2 Quick Release Assembly with RP-20 Plate is a compact system that can add quick release capability to a tripod head or monopod that doesn't come supplied with a built-in quick release system. It features four bubble levels for fast, accurate camera leveling and a rubber-surfaced camera plate. The plate is released from the base using the 2" double action safety lever. A slot on the plate allows the camera to be adjusted 0.75" to achieve the best balance possible. A centering (video) pin makes it easy to use with camcorders and many digital cameras.