zjxed 5/16" OD x 1/4" OD Pneumatic quick Connector Push to Connect fittings Straight reducer Union/Coupler (Pack of 10)

Works great

The spring fitment on these feels so smooth and is much easier to use than other products I've used.No leaks and feels very solid.Would purchase these and other similar products again.

I'm very satisfied with these connectors. Work the first time without any leaks. When I had to replace a line, I did have a minor glitch trying to reuse one. This was no problem for me. When you consider the cost-effective pricing of these connectors, for my $$$$ you get more than you pay for. I am satisfied and yes I will be ordering these again.

Bought these to make a quickswap system for feeding from different filament dryers when not using my AMS system. It works well for that purpose and grabs 2mm ID PTFE tubing easily. Disconnecting is also smooth and has never presented any issues. My one issue is that I wish it were a bit shorter. It often takes one or two tries to get filament to move from the first tube to the one on the other side which i suspect is due to the tubing following the natural curve it has following insertion.. Once filament is fed through though I've had no issues.

Water filter housing in fridge cracked and leaking. Bypassed it by hooking the two water lines going to it together. They were 2 different sizes, so this coupler did the job of connecting them. Very good quality even tho they were made in China.

Used this to reduce the water filter inlet connection from original 5/16 OD to a 1/4 OD on a new water inlet valve for a Frigidaire fridge. Tight fit and no leaks. The only piece needed was a spare 1/4 tubing - to connect the male 5/16 OD water filter pipe to the female 1/4 OD inlet valve connection. So, make sure you have some spare tubing to connect to 2 female ends, after the reducer.

Used for Air Suspension repair on LR3. Used it to reduce a 1/4 line to a 3/16. Great price, looks and feels like a quality piece. First one I picked from the bag works well and is holding air without leaks. I’ve used similar items in the past for LR repair and they work well. No need to replace entire line, just cut worn piece and attach quick connect fitting.

Couldn’t find this piece with this exact sizes at the Home Depot or Lowe’s, and here I found it! Much better quality than the ones that the other stores carry.

The 1/4" end was good for the 1/4" line but the 1/2" end does not accommodate a 1/2" PEX or 1/2" copper pipe.

Son de muy mala calidadNo los puedo usar no conectan apropiadamente