... Air Sander Free speed:4,500 rpm Backing pad:4";Air inlet:1/4";Air hose:3/8" Avg. air consumption:6cfm; Working pressure Air ... trim work. Side mounted water control knob and air inlet with regulating knob. Rear exhaust.Established in ... company,integrating research, development, manufacture and trade as a whole.We specialize in making hand tools, pneumatic ... customers. Welcome to your inquiry! Air Sander