According to friends' feedback, we update the screw knob V3 M6 rotating screw knob., No worry to strip your thread.
The little clamp is very helpful and useful when attach follow focus accesaries to the rod support / rail system.
Fits standard 15mm rods, anodized black finish.
It is used to extend application such as magic arm, LED light, flash, LCD monitor. Specially for Front grip handle..
