DV0V-1MBA (25"Hg / 650 mm Hg Vac) pump, 1/8" male NPT gauge adapter, 3ft hose, 1/4" MNPT process connwction. This light weight, compact pump generates 23 inHg (584 mmHg) vacuum with ease. Its large-volume, fine-adjustment piston provides precise control, even at very low vacuums.