The Calumet 4-Flash speed ring adapter is compatible with the Calumet RM6400 speed ring and Calumet RD3100 to allow four shoe-mounted flash guns to powerfully illuminate your softbox or umbrella.
You can also use the directional heads of the flashguns without a softbox to control the light to create a range of creative effects.

Technical Details

Product Details

Package Dimensions
Width : 5.7 inch
Height : 2.1 inch
Length : 5.8 inch

Shipping Weight: 9.6 ounce (View shipping rates and policies)

ASIN : B00RDMOMZM