2" 72mm Threaded Extension (TKA23250)

The threading is incredibly precise—screws on smoothly without any wobble. I used it to extend my imaging train for better back focus on my telescope. Exactly what my setup needed for sharper frames.

The threads on this 72mm extension mate perfectly with my focuser, eliminating any wobble I had with cheaper adapters. It adds just the right amount of back focus for my camera setup without introducing vignetting.

Installing this extension between my focuser and camera gave me just the right back focus for my reducer. The threads engage smoothly without any wobble.