The Interfit STR141 can be fitted in to the STR117 Umbrella bracket to enable 3 flashguns to be shoe mounted and fired either into an Umbrella or to greatly improve power output of your flashguns at events etc.
Reviewed by 1 customers
I bought this to be able to put multiple flashes inside a Westcott 50 inch Apallo. And it works great. EXCEPT that it is very weak. The stand got knocked over and on that one fall one of the mounts broke. I might except 3-4 falls as still "sturdy", After all it is just a bit of plastic. But 1 fall? Really? That said I did immediately buy a replacement. At [$] it cant be beat.