Stainless steel braided faucet supply line, 3/8 In. Female Compression x 3/8 In. Male Compression. 120 psi (pounds per Sq. In.) working pressure. High pressure tested to 1800 pounds. Brass inserts. Chrome plated brass nuts. Use to connect or extend a 3/8 In. line. Meets California AB-1953, Vermont, and new federal standards of low lead applications.