Review on Efficient Pneumatic Connection With 5-Pack Ceker Push To Connect Fittings - 3/8" Tube, 1/8" NPT Thread Male Straight Connector by Gotdat Burton

Leaks at quick connection and as some other buyers have noted, very difficult to release this connection to reseat the tubing. For my application this small leak is only a nuisance, not a critical failure. Initially there was a leak at the NPT male threads but resolve with cleaning off the dried-out joint compound and applying new compound. The shipping was very fast, but please note, only two connectors come in the package.