Air Finishing Sander Product Type Extended Finishing Tool Abrasive Orientation Inline Minimum Drum or Wheel Diameter 2 1/2 in Maximum Drum or Wheel Diameter 2 1/2 in Horsepower 0.5 hp Duty Heavy Grip Type Single Grip Speed Settings Fixed Minimum Drum or Wheel Speed 18 000 RPM Air Consumption 24 cfm Required Pressure 90 psi Air Inlet Size 1/4 in Air Inlet Type NPT Minimum Hose Size 5/8 in Spindle Thread Size 3/8 in - 24 Arbor Hole Size 1/4 in Tool Series Dynastraight