This 1/4"-20 to 1/4"-20 Ultra Arm Monitor Mount from Wooden Camera features a 3" extension connecting two double ball-joint clamps. A lever in the center of each clamp locks the joints on it, and the mounting points on the ends of the arm attach to your gear easily at the turn of integrated tightening knobs. Both ends feature rubber pads for more secure support.
The Ultra Arm system is interchangeable. Wooden Camera offers a variety of optional end-points that install into the ball sockets of the arm. These include NATO clamps, NATO rails, shoe mounts, super clamps, and even a Preston mounting bracket. Additionally, the system is compatible with many 3rd-party 25mm ball mount systems.