Features: Aluminum alloy material, precise CNC-machined, solid and stable to use. 30mm Ball diameter, up to 5kg/11.0 lbs load bearing. 360°Swivel panoramic-view ballhead, ergonomic damping fine adjustment knob, coarse adjustment with precise adjustment, locking reliable and safe shooting effect. Built-in bubble level, which can help you find the balance quickly. Universal compatibility, features 1/4 inch thread screw and 3/8 inch bottom thread, suitable for most DSLR cameras, camcorders, tripods, mini tripods, sliders and monopods. Specifications: Model: QB-30A Material: aluminium alloy Height: Approx. 83mm/3.26inch Ball Diameter: 30mm/1.18" Bottom Base Diameter: 40mm/1.57" Bottom Screw Hole: 3/8 Top Screw: 1/4-20 Load Bearing: 5kg/11.0Ib Package Includes: 1x 360°Panoramic-view Ballhead Kit note: Please allow 0-1cm error due to manual measurement, make sure you do not mind before you order. Please allow slight chromatic aberration due to different display resolutions.