Specification : Softbox equipped with grids; An internal & an external diffuser (both removable) for versatility in refining the hard/soft ratio of flash light; Softbox is easily assembled using the softbox "skin", 8 flex rods and a speed ring for the flash head; With Standard size Bowens speed mounts, this hiqh quality softbox fits right in any studio; The large size of the softbox makes it desirable for fashion photography, portraits and medium to large sized product shots; Aluminum Ring Adapter