Air Angle Die Grinder available in 4" and 5" grinding wheel, free speed 10,000RPM... Free speed:10,000RPMAverage air consumption (25%): 4SCFMDiameter of Grinding Wheel: 4"&5"Angle:90oExhaust: Front Length:220mmWeight: 1.9Kg, 4.19LbsAir pressure:90psi, 6.3kg/cm2Air inlet:1/4" 4" & 5" Air Angle Die Grinder