SDTC Tech4-Pack G1/4" to 3/8" ID 5/8 OD Quick Tighten Compression Fitting for Soft Tubing, PC Water Cooling System Soft Tube Connectors

For the price, they are a great alternative to more well known competition. They fit easily, and seem to be of good quality. The style isn't bad either. Highly recommend.

These fitting saved me a ton of money compared to the big liquid cooling brands. They look & feel great and I had zero issue with install or leaking. So glad I found this brand for my loop.Edit: I've now built my 2nd loop using these fittings. I've been running them for over a year with no issues. Please ignore the negative reviews, most of the issues are from people not installing their tubing properly. Depending on the +/- tolerances on you're tubing these might be hard to tighten the compression ring, so buy quality tubing like EK or PrimoFlex and you'll have no issues.

It's been working very well considering the price. Initially I had an external heater core as a radiator running to a pump and to my 3080 ti. I had my i7-13700k (who knows how long it will last due to Intel's problems) connected to an AIO. I decided to have everything into a single loop so I removed the AIO, added a 360mm radiator for the additional load and a water block. These fittings were used along with some swivel 90° fittings to make one large custom inter/external hybrid loop.

These are some solid fittings and a great deal regarding price to performance. I've purchased 3 sets of 4 over the past month or so as I decided to upgrade my loop and they have been great. No leaks or threading problems. I have purchased some 90° fittings from the same brand that were also fantastic for the price although one of those came in with some chalky buildup inside the fitting and some of the black finish was missing. A little white vinegar cleaned it up nicely. My one gripe really is the absence of o-rings, not on the end that screws into your blocks and radiators but the end that the tubing goes over. Some brands have then, some brands don't. I prefer to have that one there so I went out to my hardware store and purchased some for use with these fittings. I'm getting ready add a second pump to my loop and will be ordering another set of these. I have some Corsair fittings in the same loop and I see these doing just as well as those.

No problems out of these fittings. No leaks and no issues with the install. They snugged up the hose easy enough and never leaked.

Worked well with a new water-cooled computer system !

Excellent quality,well packed

It's not plastic, so that's nice. Unfortunately the fitting is too short - once the tube is on the barb, the fitting can barely make it over the tube. Tightening it takes way more force and time than I'm used to.Other fittings will become a bit loose after repeated hot/cold cycles. These fittings can disconnect completely since they can hardly reach the thread.I made the mistake of using this in a hard-to-reach place, and have had various leaks leading to 10-20 minutes of cursing while trying to force it back onto the thread. I'm sure they'll be great if they're just a bit longer, but until then, don't risk it and just get something else.