This versatile Flange Mount can be used to mount a variety of items such as accesories to a counterweight or even the F3 Accesory Mounting Plate. The 1/2-13 tapped hole in the center can be used to mount any of our Extension Rods or the Accessory Mounting Post 1/2-13 to 1/4-20. These have many other uses and can be mounted to anything that has our standard 10-32 tapped holes on 1" centers.