PEX Quick Connect Coupling Stem, 1/2 x 3/8-In.
1/2" x 3/8", coupling stem, quick connect push fittings hold up to 250 psi, 1 piece, no parts to assemble or lose, code approved for behind wall without access & direct in ground burial installations, nsf-14, nsf-61, csa/astm & upc code listed & approved, replacement for qest & flare it type fittings.