Features: Metal Tripod BallheadMade of aluminum alloy material, solid and durable; adopts CNC processing and surface anodizing treatment, exquisite workmanship and smooth operation. With Quick Release PlateThe quick release plate designed with 1/4 inch screw and anti-slip rubber pad, can install DSLR camera, DV, camcorder easily and stably. Built in a bubble level that can help you find the balance quickly. U-shaped Groove DesignDesigned with a U-shaped groove on the side and has a powerful locking knob, which enables you to quickly switch between vertical and horizontal photography mode. Panoramic PhotographyThe disc-shaped base with precise scale can achieve 360 rotation for panoramic photography. With a side knob to lock the disc-shaped base firmly. Wide CompatibilityWith bottom 3/8 inch screw hole and a 1/4 inch to 3/8 inch convertible screw, the ball head can be mounted to almost any tripod, monopod and other photography bracket with 1/4 inch or 3/8 inch screw. Specifications: Material: Aluminum alloy Max. Load Capacity: 15kg/33lbs Screw Mount for Camera: 1/4 inch Screw Hole: 3/8 inch Ball Sphere Diameter: 35mm Base Diameter: 44mm Package List: 1 * BallHead