Jones Stephens Plum Bite Fittings are a heat-free method of joining Copper, CPVC, PE-RT or PEX tubing. It is designed to save time on installation and to connect piping with relative ease and confidence. No Soldering, glue, heat or external tools required to join the pipe. Simply insert the pipe and the stainless-steel gripper ring, bites down and holds the pipe tightly while the EPDM o -ring seals against leakage. Disassembly is just as fast using the optional disassembly tool so fittings can be easily be removed and re-used.