BIRUGEAR Metal Universal 1/4"- 20 Tripod Screw to Flash Hot Shoe Mount Adapter This Metal Adapter Converter is used as Monitor Bracket. The bottom of this adapter connect to the camera hot shoe, the top part of it is a 1/4-20 threaded spud. This adapter can pile up two camera. For auxiliary flash or accessory. Hot Shoe adapter measurement 0.748 in (19mm) x 0.7874 (20mm). Not for Sony type hot shoe or Camorders.