DEWALT Angle Grinder, 9-Inch, 6,500 RPM, 4.7-HP (DWE4559N)Product Overview The DWE4559N Angle Grinder has a high power 4. 7 HP motor with overload protection and 6,500 rpm for optimal material removal with 9" grinding wheels. Dust Ejection System prevents harmful dirst from entering the motor. Additional Features Lightweight design (12. 1 lbs) lessens user fatigue Automatic turn off brushes shut down the tool when brushes need to be changed to avoid tool damage Low profile gearcase allows for work in tight