ITEM NAME:Yelangu Mini Single 15Mm Kit Connection Base For Sony Aluminum Rail System F9U3 Yelangu Mini Single 15Mm Kit Connection Base For Sony Aluminum Rail System F9U3 Standard 1/4 camera screws,compatible with most DSLR/DVR. The quick release plate can be removed to install the camera,easy installation and removal. This rail rod system can stand in the 1/4 inch screw tripod use,as well as with a variety of shoulder mount,matte box,follow focus for various DIY combinations use. High-strength aluminum alloy production technology,steady and durable.Each section can be easily uninstalled and restructuring. Color:black +blue Material:aluminum alloy Size about:pipe diameter:15mm pipe center distance:60mm pipe length:200mm Package Contents: 1* PTZ 1* 20cm Catheter