Yes, I should have thought of the Antares.
Both from the same manufacturer, I suspect - two brands.
I have a number of the Antares twist-locks adapters and love them. They go on my 1.25" eyepieces while I am observing. However the adapter itself still goes into a focusser which doesn't have a self-centring approach - either lock screw(s) or compression ring. But still, it is a good adapter for a dob or where you keep the eyepiece pointing upwards. Careful if you hang an eyepiece or camera upside down from one - it could slip out if you don't have it firm!
We ned a combination of this and the Hotech compression rubber rings. Wind the top knob and it tightens inward on the eyepiece, and simultaneously outward on the focusser draw tube!
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