Reducing coupling Size: NPS 1/4"-4". Standard:ANSI B16.11. End type:THD,SW, ... sizeType of ThreadO.D*L(mm)weightTubing Coupling1.050NUE33.35*80.960.231.050EUE42.16*82.550.381.315NUE42 ... 2”EUE141.30*158.756.05Pipe coupling Size: NPS 1/4"-4". Standard:ANSI B16.11. End type:THD,SW,BW ... Pipe coupling,Reducing Coupling2.Size: NPS 1/4"-4".3.Standard:ANSI B16.11.4.Mateiral:carbon steel,stainless steel,A105,A403 ...