CAUTION! Use only for umbrellas ...
Delamax (by Phottix) Flash and Umbrella Holder for Studio umbrellas and Aufsteckblitzgeräte and Studio lamps - screen Eiger - shoe mount (Electronics) 3
Please use this thing on a screen! I have a small softbox with 580EXII mounted thereon and because the screw is interrupted me with the hot shoe is attached. The box including lightning crashed. The Speedlight is fortunately nothing happened. But for a small screen, it works quite OK.