No other connector on the market comes close to the toughness of a Fluidmaster® PRO Series Connector. Made of a tough polymer core encased in braided stainless steel wire, these connectors go above and beyond what's required by code. Backed by a 10-year warranty, these connectors are only found where other PRO Series products are sold. Fluidmaster® PRO SERIES™ Faucet Connector, 3/8 in Nominal, Female Compression, 20 in Length, 125 psi Working, 40 to 150 deg F, Braided, Stainless Steel, Import