Fotodiox Pro FlapJack LED C-700 RSV Edge Light Yoke Locking Knob.

The lock-on mechanism is solid and gives me confidence the yoke won’t slip mid-shoot. It threaded perfectly onto my existing light and feels sturdier than the original part.

Got the locking knob installed this morning and it tightened perfectly on the yoke, no wobble at all. Exactly what I needed to replace that stripped one, and it feels solid when I adjust the light position.

The threads on this knob matched the yoke perfectly, so my light is finally secure again without any wobble. It feels solid and tightened down firmly on the first try, saving me from having to rig a temporary fix.