Air-driven Gas Booster;10:1, 34:1, 50:1 and 80:1 ratios.Single or dual ratios ;100 PSI shop air to 3, 000- 5, 000 PSI.In-line filter, pressure regulator, and air shut-off valve included.Stainless steel gauge, liquid filled, manifold block and drain.18 L x 7 W x 10 H with case.Total weight: 47 lbs.