Trying To Source A G9 Dome/shroud

[Chris Brown]

I am trying to find a replacement shroud / dome for a G9 light fitting.

The shroud / dome I need has an M8 female base thread. It is 28mm high (excluding the separate lamp holder) and has a 20mm outside diameter. The shade will not accept a larger diameter fitting.

I cannot find the shroud / dome on line. All the shrouds available seem to have an M10 base thread.

I am attaching a couple of photos.

Can anyone suggest where I may be able to obtain these? Or if not, suggest how I might be able to convert the 8mm male end on the light fitting to the 10mm female on the shroud.

Any help will be greatly appreciated.

Thanks
Chris