NSF approved lead free bronze or brass water meter flange Material: bronze C84400,C89833, lead free material NPT thread Water meter flange with washer/ bronze water meter flange/ AWWA meter flange Free-lead bronze: Meet ANSI/ standard. NPT thread. For AWWA standard meter. NSF 61 Certificate approved. They used in drinking water system Size: 1&1/2", 2". The kit contain 2 flanges, 2 rubber washers, 2 bolts, 2 nuts, 2 stell wahers.