4 X 2-1/2 NB SCH10S CON RED BW 316L SSCRBW6440

4" Nominal Bore x 2.1/2" Nominal Bore, Concentric, Reducer, Butt Weld Fitting, Stainless Steel Conforming to ASTM A403, ANSI B16.9, ANSI B16.28 and MSS SP-43. Sizes 1/2‚" to 10‚". Larger sizes available. Thicker wall sizes available. Seamless fittings available.