SharkBite U3525LF 1/4 in X 1/2 in F Faucet Connector (14 NPSM threads). SharkBite push-fit fittings are the fastest, easiest way to join copper, CPVC and PEX in any combination - wet or dry. Simply cut the pipe, de-burr and push on the fitting. SharkBite fittings can easily be removed and are reusable. This product is lead free.