This came with the boat, but the HF set didn't. I don't plan on fitting a HF, so it's no use to me.
It's basically a length of cable (1/4 wavelength? I dunno) with lanyard so you can hoist it up or drape it along depending if you still have a mast or not.
Etiehr pick it up in Melbourne SE burbs, or you pay the postage.
Cheers, Graeme