The AIRCAT 2.3 HP 5" Heavy Duty Angle Grinder, No. 6380, features a 2.3hp motor, patented "silencing technology" and a spindle lock feature. This tool offers 12,000 rpm with a governed motor to help prevent overspeeding. Other notable features include a spindle lock feature designed to eliminate the need for multiple wrenches for quick and convenient wheel changes; rotational rear exhaust with internal silencing to reduce the noise level to 87 dBA; vibration damped side assist handle for improved operator comfort; and a light unit weight of 3.97 lbs.