*******Sold - Thanks Steve*****
I'm selling an AP 2.7" adapter to SCT threads (ADA204 - $40 new) and an SBIG T-thread visual back ($49 new) - see photo. These threaded connections end the fear of dropping your camera off the back of your scope because a set screw slips, it is a very positive connection. These are both like new, just a few months old, and I'll ship them to you (conus) for $75 (or make offer). There is a second picture in the refractor section that shows them connected and on an extension tube (not included) if it is not clear how they attach. I'd prefer to set them as a set.
Thanks for looking!