Comments about Bogen Imaging Bogen - Manfrotto Rapid Adapter, Converts a Standard 5/8" Mounting Stud to a 1/4" x 20 Mounting Thread with Locking Nut, 55mm Total Length. (#3105):
I use this adapter to connect a Mini Ball Head (Bogen #482) to a scissor clamp in order to support a flash unit to suspended ceilings when doing industrial and portrait work.
It is easy to use and very reliable