All of our PROBite Push On Fittings are compatible with CTS (copper tubing size) pipe, such as copper, CPVC and PEX. When installing tubing into our push on fittings, simply use a hi flo stiffener (sold separately) and slide the tubing in. Make sure the size of your tubing matches the size of your fitting. The End Stop 3/8" C is sure to please.
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