Pack of two 3/8” Male Thread x 1/4” compression adapter Use it to connect the ice maker water line to your refrigerator or to connect a humidifier. Compression adapter fitting connects a 1/4" OD copper/plastic pipe (or a flexible water connector) to a 3/8” female threaded outlet or fitting in a straight line. Product features: Made from lead-free brass. Approved for potable water use. Nuts included Brass material provides corrosion resistance, ductility at high temperatures, and low magnetic permeability Product specifications: Connections: 1/4" OD Compression x 3/8" NPT (Male Threaded) Temperature Range: -5° to 250° F Max Operating Pressure: 200 psi