GREEN Instrument Thread and Weld Fittings Pipe Thread 1/8" 2" Tube Socket Welding 1/8 -2 NPT, BSPT, PT, BSPP, ISO 7/1, ISO 228/1 Wrench Flat Body allowing standard Hex. wrench assembly Attractive finishes to suit precision equipment Great pressure rating than traditional pipe class fitting Wider range of material