ACDelco ANC301 3-inch Cut-off Tool, 20000 RPM, 7-3/8-inch length Rear exhaust design Rotatable cutting wheel guard to provide any safe and convenient position Free speed of 20,000 RPM with Air Consumption 	of 3.4 CFM (96.0 l/min) Air Pressure - 90 PSI (6.2 Bar) ;Air Hose - 3/8 (10 mm)