Buy the Swagelok Tube Fitting, 1/2 TO 3/8 in Reducing Union, Stainless Steel, Gaugeable, 1 ea., PN: SS-810-6-6 here.
Ideal Spectroscopy Swagelok Tube Fitting, 3/8 TO 1/4 in Reducing
Ideal Vacuum Swagelok Tube Fitting, 1/2 TO 3/8 in Reducing Union
Ideal Spectroscopy Swagelok Tube Fitting, ¼ TO 3/16 in Reducing
Ideal Spectroscopy Swagelok Tube Fitting, ¼ TO 1/8 in Reducing
Ideal Spectroscopy Swagelok Tube Fitting, 1/2 in Union
Ideal Vacuum Swagelok Tube Fitting, 90° Elbow Union, 1/8 in
Ideal Spectroscopy Swagelok Tube Fitting, 1/2 in Plug, Stainless
Stainless Steel Swagelok Tube Fitting, Reducing Union, 1/2 in. x 3
Ideal Vacuum Leybold TURBOVAC 350i Turbo Vacuum Pump, ISO-K 100