The Ball Head Knob with 3/8"-16 Screw from SmallRig features a secure ARRI-style mount with locating pins. Designed for use with SmallRig ball head magic arms and ball head clamps, this knob also features a rubber gasket for increased grip. The ball head end fits into a magic arm or clamp, and the other end screws into a compatible ARRI-style 3/8"-16 thread on your cage or rig. The Ball Head Knob is made from CNC-machined aluminum and includes an Allen wrench.
