1/4-20 x 0.85吋塑膠旋鈕套件 (142085KBKIT)

The threads on these knobs are cleanly cut, so they spin on smoothly without any binding. I'm using them to fasten my telescope mount adapter and they hold tight with no wobble. Exactly what I needed for this setup.

Was a little worried the plastic knobs wouldn't feel sturdy enough, but they thread smoothly and hold tight without any wobble. Exactly what I needed for quick adjustments on my pier adapter.

Perfect for securing my mount extension — the threads are clean and the plastic knobs tighten smoothly without binding. I've been using them with my pier adapter and the grip is just right for hand-tightening.