Features: Metal tripod ball head: made of aluminum alloy, solid and durable; adopts CNC processing and surface anodizing treatment, exquisite workmanship and smooth operation. Standard 1/4 inch screw: with standard 1/4 inch screw at the top and max. The load capacity is up to 5kg, suitable for most DSLR, ILDC cameras, DVs, mini camcorders, etc. U-shaped groove design: designed with a U-shaped groove on the side and a powerful locking button that allows you to quickly switch between vertical and horizontal photography. PANORAMIC PHOTOGRAPHY The disc-shaped base can achieve 360 degree swivel motion with calibrated precision for panoramic photography. With side button to securely lock the disc shaped base. Wide compatibility: with 3/8 inch screw hole and 1/4 inch to 3/8 inch conversion screw, the ball head can be mounted on almost any tripod, monopod and other photography holders with 1/4 inch or 3/8 inch screw. Specifications: Material: aluminium alloy. Max. Load capacity: 5 kg/11 lbs. Screw mount for camera: 1/4 inch Screw hole: 1/4 inch and 3/8 inch. Ball diameter: 20 mm. Base diameter: 35 mm. Item weight: 86g/3oz Package list: 1 x ball head