Average Lead Content: Low Lead | Brand Name: BK Products | End 1 Diameter: 1 1/4 in. | End 1 Type: FPT | End 2 Diameter: 1 1/4 in. | End 2 Type: FPT | Finish: Black | Material: Malleable Iron | Packaging Type: Pack B & K / Mueller boasts an extensive line of black and steel nipples. Black Merchant Couplings are used to protect threads on longer lengths of pipe. Not for use with potable water. | For air, natural gas & steam | Not for potable water