Features:<br> The MH621 Quick Release Assembly is equipped with a camera that slides forward and back for macro positioning， and features a safety button that limits the amount of sliding on the quick release. Quick release plates are fitted into a compatible tripod's pan head or ball head quick release mechanism for easy removal and replacement of equipment. The M621 has two bubble levels， and the plate comes supplied with removable 1/4"-20 and 3/8"-16 camera screws， as well as a spring loaded video pin. Two threaded holes on the side of the quick release allow for storing the unused camera screw directly on the assembly. Comes supplied with a short(standard) quick release plate; dimensions 3.5 * 2.2 * 0.4".<br> <br> Specifications:<br> Material: Aluminum alloy<br> Item Size: 10.4 * 10 * 2.4cm / 4.1 * 3.9 * 0.9in (L * W * H)<br> Item Weight: 252g 8.9oz<br> Package Size: 23 * 13 * 3cm / 9.1 * 5.1 * 1.2in (L * W * H)<br> Package Weight: 285g / 10.1oz<br> <br> Package List:<br> 1 * Quick release adapter &amp; Plate<br> 1 * Hexagon wrench<br> 1 * Mounting screw<br>  <br>  <br>  <br>  <br>  <br>  <br>