Smaller diameter Camera Mounting Knob for upper rail on all NN4 series pano heads.
The smaller knob design allows for greater inward adjustment needed with many point and shoot cameras. Good for NPP from 28-42.5mm from upper rotator center.
No charge for swapping the standard vertical rail mounting knob with these smaller diameter knobs during purchase of Nodal Ninja (mention in "Notes" section during checkout).
Please note: Image(s) may not reflect exact NN4 part.