Do you know which model is compatible with the Nissin Di866?
I think you need to make your own for that flash. I am pretty sure that the BB only fits Nikon and Canon flashes.
http://www.rpphoto.com/flashextender/flashfit/default.asp
Shows how to determine Better Beamer model by size of flash unit.
Yup, I love mine.I'm thinking of getting one, but £40 ?
Does anyone actually get much use out of them?