This is a spare quick-mount plate for my Targus 71" tripod. I think it fits some of the other Targus sizes, (The ones with a grey plastic head, Amazon shows several between 50" and 71")It prints upside-down, to avoid overhang, and make the camera mount surface as smooth as your build platform.Print Add a 1/4"-20 bolt 1/2" long, and a washer Mount to camera Open tripod quick-release insert in tripod and close lever.