I use these quick connects in the pasture to connect hoses to automatic watering buckets for my goats. I have three sets of buckets that are connected under pressure 24 hours a day for six months during the warm season. I have NEVER had a failure, and if I replace the washers every year, I never have a leak. Every couple of days I unsnap each hose and dump and clean the buckets. No need to turn off the water, the flow stops immediately. Very convenient. Being solid brass, they never rust. I assume the ball bearings are stainless steel.
I like to use these and make everything I have that hooks to a faucet interchangeable. This is an excellent solution.
I like that I can change applications without needing to walk all the way back to the faucet to turn it off, change, then walk back to turn it on again. I paired this with the noodle and an couple of other applications that help an old lady with mobility issues get a bit of water to a dry scape.
I have multiple sections of hose to drag around my mountain lot. The Quick Connect makes the task much easier - I also change the watering wand for pots, seedlings and then long distance - again the Quick Connect makes it "Quick"