Brass | Blind Flanges | Gap-a-lets | Hex Reducer Bushings | NST x NST Swivel Coupling | Reducing Insert Male Adapter | 1-1/2" x 1/2" | 1-1/2" | 1" x 3/4" | 2-1/2" x 2" | 3/8" x 1/8" | 3" x 3/4" | 4" x 1-1/2"