1. Self-locking quick-release mounting device consists of two parts, each attached to a separate piece of equipment, then locked to each other, and unlocked and separated from each other at the slide of the pin. 2. a quick release between most any 1/4 inch camera and accessories, and can be used with most 1/4 inch gears. 3. Metal , advanced CNC precision machining and the surface treatment with anodized rust prevention. 4. Load up to 10kg, durable and to use. 5. Widely used in monitors, arm, tripod, LED lights, flashes, LCD monitors, etc. Colour:black :Metal Package Contents: 1 x quick release board kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.