Air Orbital Sander Vacuum Type Non-Vacuum Product Type Air-Powered Orbital Sander Disc Motion Random Orbital Abrasive Mount Type Hook and Loop Motor Type Gearless Duty Heavy Orbit Diameter 3/16 in Horsepower 0.5 hp Grip Type Palm Speed Settings Variable Air Consumption 23 cfm Required Pressure 90 psi Air Inlet Size 1/4 in Air Inlet Type NPT Minimum Hose Size 3/8 in Arbor Hole Size 1/4 in Exhaust Location Rear Tool Series Dynalocke Tool Length 11 1/16 in Tool Weight 2.9 lb