Interior and exterior diffuser (both removable) for flexibility in adjusting the hardness/softness of the flash. The softbox easily assembles using the softbox's "skin", four fragile rods, and a quick ring for the flash head. With standard Bowens speed mounts, this high-quality softbox fits in any studio. Aluminum ring adapter. Shape: Octagonal. Mount type: Bowens. 1 x Internal diffuser. 1 x External diffuser.