Brass Quick Connect .404 X 1/8″ MNPT 
Reliable brass quick connect adapters give a leak tight seal without the use of tools. The quick connect seals on the unthreaded(.404 inch diameter) portion of our standard 1/8″ NPT gauge tubes. For the permanent connection to your system select either 1/8″ Male NPT or 15mm diameter tube. Optional stainless steel body available(Brass Nut).
Available on backorder