Features: Aluminum alloy material, precision CNC-machined for durability and stability. 30mm ball diameter with a maximum load capacity of 5kg (11.0 lbs). 360-degree swivel panoramic ball head with ergonomic damping knob for smooth fine adjustment; features coarse and precise adjustment controls for secure locking and reliable performance. Built-in bubble level aids in quick and accurate leveling. Universal compatibility with 1/4-inch screw and 3/8-inch bottom thread, suitable for most DSLR cameras, camcorders, tripods, mini tripods, sliders, and monopods. Specifications: Model: QB-30A Material: Aluminum alloy Height: Approx. 83mm (3.26 inches) Ball Diameter: 30mm (1.18 inches) Bottom Base Diameter: 40mm (1.57 inches) Bottom Screw Hole: 3/8 inch Top Screw: 1/4-20 Load Capacity: 5kg (11.0 lbs) Note: Allow 01cm measurement variation due to manual measurement. Slight color differences may occur due to variations in display resolution. Package Includes: 1 x 360-Degree Panoramic Ball Head Kit