New Hejnar Photo Clamp adapter. It can be mounted to all clamps from Hejnar Photo and clamps from other manufacture equipped with slot on center. The slot must be wider than 0.207 inch. Please refer to your clamp specification in that matter. Adapter lets you switch setup orientation very quickly. It is extremely helpful in application where rotating clamp below is not possible, will require substantial amount of time or it is just simpler to keep clamp below in original position and have instant 90-degree rotation for your setup.