Get it all: powerful performance, high-speed rotation and excellent overload protection in a lightweight, worker-friendly package. Jam-pot transmission ensures precise gear alignment, enabling smoother, quieter, more reliable operation. Auto-off brush-failure system prevents rotor damage, and the one-piece brush arm inhibits false-alarm hang-ups. Clever, unique Dust Ejection System™ purges any dust and debris that might work its way into the tool's intake vents. Vibration-reducing side paddle featuring a safety-lock-equipped power switch improves overall tool control while helping avert accidental start-ups. Fully adjustable, keyless guard allows workers to position the shield to provide maximum protection from sparks and kick-back projectiles. Type: Angle; Wheel Diameter: 4 1/2"; Speed: 11,000 rpm.