1. Copper Fitting Made of TP2 Copper Pipe 2. ANSI B16.22, MUELLER 3. NSF, CRN TC100-RMUELLEREPCNIBCOWC-400100600 O.D.Size InchesInner QtyMaster Qty1/41005,0003/81005,0001/2502,2505/8251,5003/4258007/8255501253501-1/8103001-1/4102601-3/8102001-1/2101701-5/8101302-1/85602-5/82403-1/81244-1/816 copper coupling with roll stop