Morris 1100 wrote:
Just make sure that it fits properly.
1) Make sure that the taper fits into the hole properly.
2) Make sure of the length.
3) Make sure the thread is the right size.
I was just looking on the net and found that the UK number for the QH joint is QR1072S.
I am guessing that yours is possibly Australian made using the Australian part number.

Just make sure it fits.

I took the old one with me to compare, and all the important bits line up. From centre of the cup to the end of the assembly, is the same length as the original. The thread looks to be the same width and depth. The hole appears to be the same diameter.
The only difference is the thread on the piece that swivels, but you get a new nut with it anyway. Has a much larger thread is shorter.
I guess I wont really know until I get home.