SmallRig Camera Magic Arm with 15mm Rod Mount from SmallRig. The 5.5? articulating arm consists of a ball head clamp, a ball head with a 1/4?-20 thumbscrew, and a ball head with a combination 15mm rod clamp and 1/4?-20 mounting screw.
Attach Monitor or Accessory to Your Rig
5.5? Articulating Arm
Ball Head with 1/4?-20 Thumbscrew
Ball Head with Short 15mm Rod Clamp