Aerospace grade trigger switch for secondary pumps Gold plated internal contacts and Kapton diaphragm ensure reliable long term service Preset for 5 psi actuation (ON/CLOSED above 5 psi, our recommended practice) 1/8 NPT male interface is compatible with our push on boost/vacuum hose and fittings Comes with sealed Delphi connector and 15 feet of 18 gauge bonded wire Optionally available black anodized barb fittings for 1/4" [6mm] or 3/16" [5mm] inside diameter hoseLearn More