3/8" Quick Connect Water Purifiers Tube Fittings for RO Water Reverse Osmosis System Pack Of 10（Ball Valve+Y+L+I+T Type）+5 meters（15 feet） tubing hose pipe for RO Water Reverse Osmosis System

The tubing is very stiff considering that it comes wrapped into a coil shape. But the hardware provided does not leak. It's top quality materials and construction.

An amaZing product @ an amaZing price!!!Thank you, it worked perfectly with my under-sink water filter system setup.

This is 3/8" OD and 1/4" ID. Seems to be a good product.

Used this kit to upgrade my RO system from 1/4” to 3/8”. It allows higher volume to my refrigerator so now it makes full size ice cubes, just make sure you have to pressure to support the larger lines.

Good mix of Quick Connect parts for a reasonable price.

Using a low pressure pump on an open ended line traveling 1 foot up the fitting began leaking. These fittings can not hold enough pressure to push water upward.If you look back at the reviews, most of the positive ones are older and show different tubing. I guess they changed the product.

Fittings leak! Can't get them to stop. Poor quality.

This is a 1/4" pex line and not a 3/8". I had to go to my local hardware store and buy an adapter from 3/8 to 1/4 to use this kit. Other than that, everything was simple to use and works great.