PEX Stop Valve, straight type, with 1/4-turn handle. 1/2" PEX expansion (inlet) x 3/8" OD Compression (outlet). Lead-Free chrome plated brass. Approved for potable water use and meets NSF/ANSI 372 & 61-g. Direct replacement for Uponor LF4865038. Installed using expansion method (expansion tools + rings), compatible with Uponor/Wirsbo ProPEX system (hePEX, AquaPEX), Sioux Chief, Mr. PEX & Rehau.