I have just received three of these and I think they are going to be a great addition.
Photos show a smooth 2" barrel - no catching on compression ring in focusser. The plastic compression ring in the adapter fits well over the undercut in 1.25" eyepieces that I have - you can see it on a Burgess/TMB planetary. It was fine on a Vixen LV, a TV plossl and a 19mm Panoptic.
The compression pulls up firm with a simple twist. The upside down shot (next post) is me trying to shake the planetary loose - it didn't budge!
I will leave them on my regularly used 1.25" eyepieces throughout an observing session.
I bought them from here:-
http://cgi.ebay.com.au/Antares-2-to-...4.c0.m14.l1262