36.5mm 長 69mm 外螺紋轉 48mm 外螺紋延長 (SFE-M69M48-036.5)

The threads are clean and precise, screwing together smoothly without any wobble. Exactly what I needed to get the right back focus for my imaging train.

Finally got the spacing I needed for my image train—this 36.5 mm extension fit perfectly between my focuser and camera. The 69 mm male threads threaded on smoothly without any cross-threading issues.

The threading on both ends is clean and precise—screwed onto my setup without any wobble. I needed exactly 36.5mm to dial in the back focus, and this extension did the trick perfectly.