The falcon eyes sp-4m4f-ur umbrella holder is a universal umbrella holder, which fits on most tripods and light stands. the sp-4m4f-ur is equipped with a 8mm opening and screw bolt, allowing you to slide the handle of your flash umbrella into the opening and fix it into position with the screw. additionally, the sp-4m4f-ur is further equipped with a ¼” male and female thread. the male thread is positioned on top of the umbrella holder and makes it possible to mount, for example, a speedlite in combination with an optional hotshoe adapter. the female thread is located on the bottom of the sp-4m4f-ur, enabling you to mount it onto a universal tripod or light stand. all compatible accessories can be found in the optional accessories tab below.