This Arca-Swiss 55mm (2.1") quick release plate features one 1/4"-20 camera screw and features two anti-twist pins, customized to fit Mamiya 645, RB67, and RZ67 cameras.
Also compatible with the many other Arca-type quick release systems, e.g. Acratech, Foba, Graff, Wimberley, etc.
