Also the iOrange adapters have been benson approved.
http://www.amazon.com/Adapter-iOrange-E-Connector-Aluminum-Supported/dp/B01AY0KJUG/ref=sr_1_1?ie=UTF8&qid=1460065541&sr=8-1&keywords=iorange+adapter
Doesn't really matter, but iOrange has an adapter that is Benson approved. I like them a little more than others because they're aluminum.