Fotodiox Pro Speedring Insert Only for Flash Speedring for Nikon, Canon, Yongnuo Speedlites and More - 5-7/8" Insert for EZ-Pro Softboxes, Beauty Dishes and Standard Softboxes Standard Speedring for Softboxes and Beauty Dishes All metal interchangeable speedring insert Insert has an outer diameter of 5-7/8" Adjustable height options 24 Month Manufacturer Warranty