The Wooden Camera UVF Mount V2 NATO Rail Kit enables you to attach and adjust a viewfinder on a rig. A mounting bracket for viewfinders is included. Most viewfinders are compatible. The bracket attaches to the NATO rail of the kit. The NATO rail features industry standard dimensions, so any NATO-compatible bracket is interchangeable with the included one. An adapter for using Alphatron viewfinders and SmallHD viewfinders/LCDs comes included.