The BL™ Brushless Motor eliminates carbon brushes, enabling the motor to run cooler and more efficiently for longer life. Active Feedback-sensing Technology (AFT®) turns the motor off if rotation speed suddenly slows or the wheel is forced to a stop. Many angle grinders feature small thumb-activated switches, but the Makita’s is large and easy to… Continue reading 910815-6 Makita Angle Grinder, 4-1 2″ Wheel Dia , 12 Amps, 120VAC, 2800 to 10,500 No Load RPM, Slide Switch