أسطوانة 1/2" × 20 محور أنثى ملولب دوران يمين

The threads on this arbor are clean and sharp, so it locked onto my sander without any wobble. Exactly what I needed for consistent drum sanding on curved wood pieces.

The right-turn thread seated perfectly onto my rotary tool without any wobble, and the 1/2x20 mounting held firm through a full hour of sanding. I've already ordered a second one to keep as a backup since these always seem to wear out at the worst time.

I was a little worried about fitment, but the 1/2 x 20 threads caught immediately and spun true with no wobble on my sander. It feels solid and balanced while running, and the right-turn configuration works perfectly for my setup.