Yong Heng DIN adapters???

I'm certain this has been posted about many times so I apologize for the questions, I don't have the patience to search around today.

This is for filling my two 4500 psi tanks. Attaching to the Foster female fitting coming out of the air/moisture separator and going to the DIN. 

What have you guys used and where did you get them?

Thanks a bunch in advance!