Photoflex Adjustable Shoe-Mount Flash Lightstand AdapterThe Photoflex Adjustable Shoe Mount Flash Lightstand Adapter is a sturdy metal bracket that enables use of a flash with a standard shoemount design. This unit comes with a heavy duty reversible 5 8 inch brass stud with a screw on each end (3 8 inch and 1 4 inch 20) that expands the connectivity options of the bracket to use our heavier duty metal OctoConnector with all of our soft boxes. The 3 8 inch stud is required with the OctoConnector when used