With the Universal Ultra Arm 3"" Monitor Mount, featuring a Combo 1/4-20 and 3/8-16 Screw Knob, you can enjoy a durable and versatile solution for your camera and video equipment needs. This articulating arm is designed with interchangeable 1/4-20 and 3/8-16 knobs, each equipped with non-slip rubber pads for secure positioning. The centerpiece of this sturdy mount is a double ball clamp, providing robust support and allowing for precise adjustments. The Ultra Arm base comes with four locating pins, compatible with SmallHD or Arri accessory mount devices, enhancing its versatility. Available in Mini Monitor Mount, 3"", 5"", and 8"" lengths, this adjustable mount is designed to cater to a wide range of equipment sizes. The Ultra Arm components are interchangeable, allowing you to customize your setup with other options such as 3/8-16, Nato Clamp, Hot Shoe, and Super Clamp. For added flexibility, you can incorporate a center extension piece and a second Double Ball Clamp. This mount is also compatible with many existing 3rd party 25mm ball systems. The 1/4-20 Ultra Ball Knob and 3/8-16 Ultra Ball Knob can be easily swapped by depressing the brass pin and sliding out. The Ultra Arm base includes four locating pins, which can be installed in either SmallHD or Arri Standard spacing, ensuring secure mounting of accessories. This makes the Universal Ultra Arm 3"" Monitor Mount an ideal choice for attaching LCDs, lights, audio recorders, and much more, making it a valuable addition to any photographer or videographer's toolkit..