Features: Aluminum alloy panoramic tripod head clamp, CNC precision machining and surface adopts anode anti-oxidation treatment. 38-42mm adjustable jaw, compatible with Arca-Swiss standard, including Arca Swiss, RRS, Kirk, Wimberley, Markins, Sunwayfoto, etc. Can be mounted onto tripod, monopod and other devices with 1/4 or 3/8 screw, and supports 360 panoramic photography. Built-in bubble level for you to find the balance accurately and quickly. Including one quick release plate with 1/4 standard screw and anti-slip rubber pad, easy to install your camera and keep it safe.