Mini Trilens Radar reflector.
I bought this for my boat, never got around to fitting it and now I have no boat.
These units are quite neat and get good reviews for performance.
The unit allows you to save space by mounting a nav light or a VHF aerial on top of it.
More product info
Here
Price £105 + £11 postage.
Please PM me.
PS. the bracket is for a mast, the unit will fix into an A frame without the bracket.