The Bracket 1 Base A - Threaded Handle Mount 1 builds your custom Base A system beginning with one of the threaded handle mounts. The Base A - Threaded Handle Mount 1 fits Panasonic AG-AF100, AG-HPX255, AG-HPX250, AG-AC160, AG-AC130, and AG-AC120 camcorders, and most other cameras with two 1/4"-20 threaded holes spaced 1.5" apart that are placed directionally from the front of the camera to the back.