What is itPureSec 2018 LTOB1414 mini white plastic quick fitting 90 degree Elbow Union Push Connector 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 fits standard OD1/4" 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 commonly used to join a couple pieces of poly tubing or extend a water line in case a line gets pinched or breaks , it is fast emergency repair item and back up parts that work well for RO water systemsHow to use it Just pop in your 1/4" tubing into each end, pushing until it won't go in. To remove, just push in the outer circle on each end and pull right out. You need to make sure the tubing is cut squared to insure no leaks. Be sure you cut the tubing even and straight, without crimping it. Then insert straight, and all the way into the connector. If it's crooked, or not inserted all the way, or crimped, it may leakPureSec 2018 LTOB1414 mini white plastic quick fitting 90 degree Elbow Union Push Connector is quality, reliability, and economy in potable water service.What's in the parcelPureSec 2018 LTOB1414 mini white plastic quick fitting 90 degree Elbow Union Push Connector "C" clip