1. Material: aluminum alloy 2. Bottom screw hole: 1/4 3. Aluminum alloy locking knob, one-twist locking, stable and not loosening 4. Universal rotation, 360 degree horizontal rotation of the ball, free to adjust the angle, multi-purpose, small and portable 5. Easy to install, easy to use, 1/4 screw universal interface, for the installation of fill light, camera, etc., 3/8 universal bottom hole, for mounting on the bracket 6. Metal ball head, long-lasting and durable, firmly lock your digital camera, let you take better photos 7. Weight: about 76 g 8. Size: about 6 x 3.1 cm 9. Description: shipped only the bracket head, not include other