I was looking for a quick release to replace the one I've got because it has loads of play.   I saw one on Graham A's cyclekart and it seemed to be much more secure so I ordered one.  Well, its arrived and its much better and has minimal play.   I bought mine on Amazon but they are a bit cheaper on eBay: https://www.ebay.co.uk/itm/Blue-3-Bolts-360-Deg-Steering-Wheel-Quick-Release-Disconnect-Hub-3-4-Shaft-Size/333255674467

Just looking up this topic.
There appears to be two types - one with a push button (seen in a lot of USA videos) , and a second one that appears to be a pinch plate release method.

Is one better than the other?

(Just checking before I buy.)

Thanks for that Peter.

I've had a couple of the ones with the hexagonal bit you weld on the end of the steering column.  One was push button and was very loose.  The next was with the pinch plate and that's tighter but still rattles.   I've just bought one with a splined shaft and the pinch mechanism and so far it seems to be very tight.   I had to remove a flange that was on the steering column side but that was easy to do.

I paid £15 for mine - but prices seem to vary.
https://www.ebay.co.uk/itm/333791181228

That sounds better Stefan, thank you. As you say, prices vary, £17+ from that supplier now. I'll have a scan later, I'm sure they all come from the same factory in China.
Does the spline weld on to the steering column?

I looked at ordering 10 from Alibaba but the shipping costs and taxes ended up at about £13.   I happened to find one listing that had a "make an offer" option.

Found one at £16, duly ordered. I'm sure I can work out how it works when it arrives.

Strange but true!
On the full size Morgan the steering columns are mild steel tube, all telescoped joints (base spline, mid column gearbox, and top taper) are silver soldered, at least from the beginning until early 1950. They have one pin, named in the factory drawings as a woodworking nail with head and excess length cut off and peened. The ones in mine which haven't moved since 1934 are about 1/16th of an inch!
On my cyclekarts I have brazed the spline part of the quick release to 19mm ERW tube.

Photos as promised, pushing the button releases the silver ring which is rotated to release the wheel.

Unfortunately I can't find a UK supplier, I would use this one again because of the slop free fixing.

I took the flange off the base part on my lathe but could easily be done with a hole saw or angle grinder.   My plan is to drill a 16mm hole in the bottom and slide the splined ferrule over a 16mm steering column.

Mine has arrived, got the steering wheel bit off in seconds - then half an hour to work out how it went back on! Easy once you know how.

It looks like the spline on the column part is pressed in to its base, or am I being over optimistic?

I plan to fix the spline in to the column - silver solder or weld it. How have you got on with yours Stefan?