Quote Originally Posted by William Chitham View Post
...needless to say, it doesn't fit my Wescol lightweight handle...
William Chitham.
When I called them about the size of the thread on the tips they told me, that's why they do not show this mixer/neck as available on their webpage.
It is only a spare part to fit their torch (and nothing else on UK market).
I think, you would have been better off buying the torch package complete with tips?? rather than trying to mix and match...

Uniweld swaged tips (or elbows as they call them in their catalogue) appear to be screwed on into the mixer in the same fashion as lightweight torch that you and I are familiar with.
The thread is supposedly 1/4" 27TPI