1/2" F.I.P. (Female iron pipe) x 7/8" BC (Female ballcock), Stainless steel faucet supply line. Braided stainless steel wrapped around reinforced braided PVC with 3/8" C metal hex connector nut and 7/8" plastic eared ballcock nut. Approved for residential, commercial, industrial applications where 1 must connect water supply to fixture, Core of Virgin PVC is over-braided with polyester yarn then another layer of PVC then the inner core is over-braided with 304 stainless steel to form the strongest flexible supply line with superior hydraulic multi-crimp brass inserts, chrome-plated nuts, and Nitrile washer for tight seal. Used for water supply in exposed locations only. Hand tighten, use plumbers tape - not pipe dope. Maximum pressure: 125 P.S.I., NSF, IAPMO, and CSA listed. Manufactured to include no more than 0.25% weighted average lead content on wetted surfaces.