puresec 1/4 ro tubing elbow connector 90 degree 1/4 water line fittings 1/4 push to connect fittings for ro/di water filter system/aquarium(pack of 10) puresec what is it?</br></br> our hose elbow 90 degrees are made of polypropylene,it adopts push to connect technology, which allows users to connect and disconnect quick and easy without the need of any other tools.it fits standard ro tubing 1/4 inch , polyethylene tubing,copper, cpvc, pex,1/4 poly tube and pvc water pipe or hose/ice pipe</br> </br>where to use it?</br></br> applications include rodi system,irrigation system, refrigerator ice maker water line kit, coffee machine etc.this 1/4 od tubing fittings are perfect for a water line going to your fridge or your water line under your sink for a filtration system.this will take the headache out of an under counter water filter installation</br> </br>how to use it?</br></br> just pop in your 1/4 water tubing into each end, pushing until it won't go in. to remove, just push in the outer circle on each end of the tube fittings and pull right out. you need to make sure the 1/4 tubing is cut squared to insure no leaks. be sure you cut the water tubing even and straight, without crimping it. then insert straight, and all the way into the quick connect water hose fittings. if it's crooked, or not inserted all the way, or crimped, it may leak</br> </br>what you will receive?</br></br> 1/4" 90 hose elbow x 10