Part # Model Name BTF-4X6-F 4X6 REDUCER FEMALE FITTING BTF-4X6-M 4X6 REDUCER MALE FITTING BTF-4X6-TH 4X6 REDUCER THREADED FITTING BTF-GSKT-6-1/4 GASKET SCREEN COMBO 1/4" BTF-GSKT-6-3/8 GASKET SCREEN COMBO 3/8" BTF-GSKT-6-5/16 GASKET SCREEN COMBO 5/16" BTF-GSKT-6-7/16 GASKET SCREEN COMBO 7/16"