The DeWALT® 9-inch 6,500 rpm 4.7 HP No-Lock Angle Grinder is a lightweight tool designed for a variety of grinding projects, With this grinder, you can work in very tight areas, operating with a high power 6,500 RPM motor. Like many of DeWalt’s angle grinders, this one features the Dust Ejection System™, which ejects harmful debris that gets in through the intake valves and helps to extend the life of the brushes and motor. The 9-inch angle grinder’s brushes automatically turn off the motor when they need changing. Replacing brushes is quick and easy thanks to the brush window. Overload protection allows the motor to sustain high operating speeds without over-heating. You can also quickly adjust and redirect sparks using the Quick Change guard.