Kupo's u-grip series is a professional quality mounting system especially designed to give your car mount extra stability as well as eliminate camera and lighting vibration. The variety of u-grip gears made of cnc aluminum alloy withblack anodized finish makes it extremely easy to precisely position your camera or light at any angle you need. An ideal solution for a variety of mounting applications. Same function as the Kupo round u-grip head (kg101611) but in a square shape. It also comes withtwo 5/8" (16mm) receiver s which allows a 360 degree swivel. The ratcheted handle is designed to lock the rod simultaneously withone clamping action.