Tripod screw hole conversion seat: the main body is made of aluminum alloy, which is made of CNC precision machining and anodic hard oxidation. It is wear- and - and has a long service life. It is compatible with 2 kinds of interfaces: 1/4-20 screw hole, 3/8-16 screw hole, positioning hole on the bottom and side of the adapter, which can be externally connected with a magic hand, and installed with a fill light, mobile phone bracket, microphone, monitor, etc. There are multiple screw holes on the side of the conversion seat,which can increase the tripod conversion function, and connect a variety of equipment for use at the same time to expand the tripod function. Standard conversion screw: 1/4-20 screw at the top, 1/4-20 screw holes at the bottom, which can be matched with various PTZ. Colour:Black Material:aluminum alloy Package Contents: 1 x Universal Tripod Screw Adapter 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.