1/2" F.I.P. (Female iron pipe) thread x 1/2" F.I.P. (Female iron pipe) thread. Stainless steel faucet supply line. Braided stainless steel wrapped around reinforced braided PVC with Hex connector nuts. 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 location only, hand tighten then 1/4 turn with wrench, use plumbers tape - not pipe dope. Maximum temperature: 180 deg. F. 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.