This part is CNC cut from 1/16" fibergalss reinforced G-10 stock, and is designed to be mounted on standoffs either below or above the frame for mounting cameras, electronics or other accessories. The plate measures 5 inches by 2.5 inches and has mounting holes in the four corners that line up with matching holes on the Upper or Lower Center Plates on the 500mm and 650mm Next Level Quad frames.