vax hoover brush part (BT6)

If anyone happens to be throwing puy an d hoover abd have this part we would be very grateful as I've broken ours in 2 trying to separate it from the handle to declog it. I tried getting new ones from 2 different sources (one ujiversal and one specifically Vac) but they don't fit. They must have changed the size by a mm or 2 since we bought it about 15 years ago. No point getting a new hoover when we will be able to use our late Mum's one after we finish clearing the house and no longer need it there. But that won't be for some months yet.