Envirospec has upgraded their stainless steel couplers and plugs. They are the best for the money.

Hansen or Parker made in USA are better but they cost a lot more.

They used to sell these cheap stainless couplers and plugs with made in China written on them. They didn't last as long as the ones they sell now.

The ones they sell now are TOUGH! Premium long body couplers, probably made with a high grade stainless steel. They don't say made in China on them either.

I don't know where they get them from, but I like them best.

Thanks for the info Mike. On the couplers and plugs and the unloader!!!

Thats good to know Mike. I normally use brass and I seem to go through them like water sometimes depending on how busy I get. Only good thing is that I drive 10 min from here to pick them up and I'm golden again. I've tried stainless in the past (long time ago) and they didn't seem to work all that well for me. Rusted up pretty quick and I couldn't get them to work.