Kupo Camera bracket is designed for Max Arm. Constructed by aluminum die casting which makes it very lightweight and durable. In addition to a standard 1/4-20 inch thread mount for a small camera, it also comes with a 1/4'' to 3/8'' adaptor to meet different size of thread mount. Meanwhile, there are four 3/8'' female sockets available on the bracket that can be connected two max arms from each side gives the most stable. The 7 mm female socket is also built for the need of the umbrella reflector.