This GODOX S2 Bracket allows you to use your Bowens mount light modifiers with speedlights. You can save hundreds of dollars by not having to purchase light modifiers specifically for your speedlights.
For Qbox softboxes - add two additional mount points to your bracket
QBox24 Diffuser Set.
Available for Bowen, Elinchrom and Profoto mounts
QBox Softbox Bracket