What is itPureSec 2018 HV1414 mini white plastic quick fitting straight inline shut off Ball valve Hand valve is made of 100% BPA Free thermoplastic material (Polypropylene), which is suitable for use in hot(140F Max) and cold (33F Min.)water applications. It adopts Push-Fit technology, which allows users to connect and disconnect quick and easy without the need of any other tools. It gives full flow and positive shut off without leakage, which is very easy to install. Valve act is 90 degrees, full on to full off, with no seepage.This little valve fits standard tubing OD 1/4"Copper, CPVC, PEX and PVC tubing for most RO systems Where to use it Applications include RO system, beverage dispensing, refrigerator ice maker, coffee machine etc. This quick connect fitting is perfect for hooking up a kitchen water supply , it isolate water line without shutting off all the cold water to the kitchen. It will save you lots of work getting to replace your in-line water filter without having to turn the water off in the basement or under the sink.You can also use it to run the RO System to the fridge ice maker. How to use it Just pop in your 1/4"tubing into either end, pushing until it won't go in. To remove, just push in the outer circle on either end and pull right out. You need to make sure the tubing is cut squared to insure no leaks.PureSec 2018 HV1414 mini white plastic quick fitting straight inline shut off Ball valve Hand valve is quality, reliability, and economy in potable water service.What's in the packagePureSec 2018 HV1414 mini white plastic quick fitting straight inline shut off Ball valve Hand valve "C" clip