Important Warnings - Grinders & Cut-Off Tools SPECIFICATIONS Model No. Free Speed (RPM) Motor (HP) Wheel Size (in) Cutting Capacity 6560 14,000 1.0 4 3/8" x 11 Gears Single Reduction Exhaust Weight (lbs.) Length (in) Air Cons. (CFM) Rear 1.8 9.5 4.2 Rec. Hose Air Inlet (in.) Size (in.) NPT/BSP 3/8 1/4 Air Supply Tools of this class operate on a wide range of air pressure. It is recommended that air pressure of these tools measures 90 PSI at the tool while running free.