Neiko 30112B 5" Air Angle Grinder, Heavy Duty | 10,000 RPM High power twin- chamber motor is equipped to stall torque resistance and increase momentum at any time with free speed of 10,000 RPM and 90 PSI Professional quality steel construction withstands tough metal work for durability and long lasting tool life Textured rubber grip handle is ergonically designed to reduce hand fatigue for increased comfort Convenient side handle is equipped for extra control and features a safety-lock throttle lever to prevent accidental startup Powerful and quick grinder is perfect for metal work and cuts into concrete, bolts, rebar, sanding work and much more