BestTong Nickel-Plated Brass Push to Connect air Fittings Metric 6MM OD Straight Union Connect air Fittings Quick Connect Push Lock Fittings air Bag Fittings Pneumatic Fittings Tube connectors 6 Pack

All I know is that everything single one leaked. This caused days of wasted time.Used on Land Rover LR3 air suspension. These leaked at all pressures and lottery could not be reused.Look for and buy the small black plastic ones. Not one of those leaked.

Liked the quick release but was too snug to use.

Worked great on my air lines. So far no leaks. I had them on for a few months now.

Great fittings, held pressure well and neither one leaked after initial intallation

Seems to be holding the air from Leaking

Good

Coupled air line as expected

Very good quality