Olympus FR-1 lookalike for use with 50mm F2 macro and FS-RF11

As all Olympus FS-RF11 Ring Flash Head (+ FC-01) and Zuiko Digital 50mm F2 macro users know you need Olympus FR-1 adapter to fit flash head properly. The price of such adapter is comparable to robbery so I decided to make something resembling it. This is 'lookalike' and you need to support it with your hand when taking pics.