1. Bearing capacity: 0.5-1kg. 2. Equipped with 1/4 to 3/8 screws. 3. It is made of aviation aluminum alloy material with good workmanship and strong professionalism. 4. Black oxidation process on the surface, smooth and durable, excellent hand feeling, elegant and beautiful. 5. It can be matched with professional tripod, monopod, lamp holder and sand easel.

http://olla.gr/q39-360-degree-rotation-panoramic-metal-ball-head-for-dslr-and-digital-cameras/