Mo, here's the only real info I can find on it.
http://www.russellperformance.com/mc...straight.shtml
Basically it looks like they call this style the Endura finish. It refers to them as the same fittings, just a different finish. And they mention they are designed to match up with all russell hose ends. That's about all I know about it. I personally planned on using it to screw into the OEM fuel filter on one end, and a black anodized hose end to screw on the other end. So I guess I was really going to test it's compatibility
Threaded Mode