Premium Supply Hoses: Hoses come with nylon braided exterior protects against chemical corrosion (commonly caused by detergent) and rusting. Inner tubing is made from Pex, safe for drinking water. With standard 3/8 Inch Compression Thread connectors (of course, made from lead-free brass, drinking water safe again!), you can easily connect our hoses with your stop valves. Our supply hoses have million dollars global insurance coverage.