It depends on what you are trying to mount it to. The device comes ready to be inserted into a light stand adaptor (and most have a set-screw which locks the umbrella stand in place) which you would purchase separately. The adaptor then connects to your light stand.
By J. Cunningham on March 19, 2015
I thought it was a diffuser, but upon inspection it appears that the black lining does not separate, so it's more of a reflector. Though, there is no silver reflective lining in the interior.
By R. Berrouet on February 14, 2013
I use a thousand watt strobe through my umbrella. I need two more of the same umbrellas. They are inexpensive but wear out easily with daily use. Want to send me two more for free? ;)
By William H. Orcutt on January 25, 2016