LASCO 19-6313 Tee Push-In Fitting with 3/8-Inch Female Compression, 3/8-Inch Male Compression and 3/8-Inch OD Outlet, Plastic Plastic push in fitting 3/8-inch female compression x 3/8-inch male compression x 3/8-inch OD outlet tee Screw onto angle stop to add a branch line for dishwasher Good for use on PEX, poly, copper OD tubing Clean tubing, push in by hand