Makita 18V LXT Brushless Angle Grinder w/ 2x 5Ah Batteries & Charger

Automatic Speed Change technology adjusts speed and torque during operation for optimum performance
Active Feedback-sensing Technology (AFT) turns the motor off if rotation of the wheel is suddenly forced to stop
The Makita-built Brushless Motor eliminates carbon brushes, enabling the Makita-built Brushless Motor to run cooler and more efficiently for longer life