Air Finishing Sander Product Type Finishing Tool Abrasive Orientation Inline Minimum Drum or Wheel Diameter 4 in Maximum Drum or Wheel Diameter 4 in Horsepower 0.4 hp Duty Heavy Grip Type Single Grip Speed Settings Fixed Minimum Drum or Wheel Speed 3 200 RPM Air Consumption 22 cfm Required Pressure 90 psi Air Inlet Size 1/4 in Air Inlet Type NPT Minimum Hose Size 1/4 in Spindle Thread Size 3/8 in - 24 Arbor Hole Size 1/2 in Tool Series Dyninger Maximum Motor Speed 3 200 RPM