This brand new universal application speed ring accommodate any number of studio lighting units, with a maximum length, width or diameter under 5-1/2". It is made to work with many brands of square or rectangular light boxes. The light box adapter is made to rotate independently from the light mounting part, giving you a total control and flexibility to adjust you lighting situation.
* Diameter under 5-1/2
* Work with many brands of square or rectangular light boxes
* Rotate independently