The Ducame Boom Extender Swivel Head / Adapter for Light Stand provides a handy way to hold softbox in place with boom arm. The versatile swivel joint allows positioning at almost any angle. The base allows a secure connection to standard (5/8") light stand studs.
It can be used with Ducame SEP-600A 60cm Easy Reach Air-Cushioned Extension Pole
http://shashinki.com/shop/ducame-600a-60cm-easy-reach-cushioned-extension-pole-39cm-60cm-speedlight-microphone-cameraetc-p-20796.html
Reviews Ducame Boom Extender Swivel Head / Adapter for Light Stand