Specification Recommended Air Pressure 6.5Kg/Cm2 (90 Psi) Model : Rp-17330 Sanding Pad : 5 Or 6″(125 Or 150Mm) Free Speed : 10000Rpm Air Inlet : 1/4″ Air Hose : 3/8″Id Avg. Air. Consumption : 4.5Cfm(128.2L/Min) Net Weight : 1.79Lbs(0.81Kgs) Sug. Air Comp : 2Hp Overall Length : 137Mm