It fits for holding the softbox or umbrella on the light stand and allows for flashing from horizontal / vertical or at the middle and low position. Dimension: approx.11.5x2.7cm/4.5x1.1". Diameter of umbrella hole: approx. 1.5cm/0.6" This Flash bracket is with 180° vertical and 360° horizontal adjustment to allow to position the umbrella and flash in different angle. Comes with 1/4 inch to 3/8 inch screw adapter to attach it to a tripod or light stand or any camera rigs that with 1/4"-20 or 3/8"-16 male thread. WELLMAKING Flash Speedlite Bracket for Camera - Swivel Design with Umbrella/Reflector Mount, Compatible with Canon, Nikon, Pentax, Olympus, Nissin, Metz and More