Mosmatic T304 SS M22 Male (14mm) to 3/8" QD CouplerDescription Until now, none of these Mosmatic quick disconnect fittings existed. I worked closely with Jaimie from Mosmatic US to have these made for us, the discerning prosumer. Keep in mind these weren't built to a price point with sacrificed precision. I wanted these T304 stainless fittings at any cost, and my guess is that many of you do too. I get that this is more expensive than brass or Chinese made stainless, but the fit, finish makes it worth