The Dovetail QR Panning Clamp adds a 360-degree upper panning ability to a tripod head, and fits ProMaster tripods, heads, and gimbals that use the Dovetail Mounting System, as well as other Arca-type products. There are two ways of attaching the Dovetail QR Panning Clamp to a tripod head. It has a dovetail plate attached to its base which allows it to connect to any Arca-type receiver. Alternatively, the dovetail base can be removed; exposing a 3/8”-16 threaded port for mounting.