THE ONLY 5 STAGE UNIT AVAILABLE TODAY. THIS UNIT IS EQUIPPED WITH A FILTER OIL REMOVING FILTER 1 GALLON DESICCANT FILTER AND A FILTER/REGULATOR. ALSO INCLUDED IS A SHUT OFF VALVE AND 1 GALLON OF DESICCANT BEADS. FIRST FILTER 40 MICRON WATER REMOVING FILTER WITH 9 OZ BOWL SIGHT GLASS AND OVERNIGHT DRAIN. SECOND FILTER - .01 MICRON OIL REMOVING FILTER WITH 9 OZ BOWL SIGHT GLASS AND OVERNIGHT DRAIN. THIRD FILTER 1 GALLON DESICCANT FILTER LOWERS THE DEW POINT TO -40 DEGREES REMOVES ALL WATER IN VAPOR AND LIQUID FORM. WHEN THE BEADS TURN FROM BLUE TO PINK IT IS TIME TO CHANGE THE BEADS. FILTER/REG 3 MICRON FILTER WITH 9 OZ BOWL SIGHT GLASS FINAL FILTER PROTECT PAINT JOB FROM ANY POSSIBLE DIRT OR DESICCANT DUST OR DEBRIS. GAUGE INCLUDED WITH REGULATOR.