This simple adatper allows attachment of a ballhead to a gimbal head. It is a 5.5" long plate that mounts in the quick release and has multiple screw holes for attaching a ballhead (or other devices).
Technician notes:
The height of the arca-swiss portion on this plate is too short so it does not fit on the BWG-Pro which uses a larger knob.
Still useable on the JR.2 and Mk2 heads with the regular round knurled knob.