Wooden Camera 110mm Clamp-On Back for Zip Box Pro 4×5.65″ Matte Box

About Wooden Camera Clamp-on Back The Zip Box Pro 4×5.65 (Clamp On Back Only) is an attachable 110mm back that allows you to put the Zip Box Pro onto lenses with any given front diameter. Simply place the Back Only on the Zip Box Pro and install the four screws.