Baader Adaptateur-T Ultra Court - Filetage 2" SCT(F)/T-2(M)

I needed a 2" SCT to T-2 adapter to attach to my Antares .63x reducer. The Antares male threads on the camera side have about 2-3 mm of no threads, before the threads start, I could not find an adapter that would screw on more than 3 threads.
This Baader adapter screws almost all the way on, leaving only 1 thread showing, so its well attach. I have 105mm of backfocus distance, in that distance is a filter drawer, OAG, and a asi2600mc pro, so alittle bit of weight and no problems at all!