The Makita DGA463 is a 115 mm (4.5"), slide switch, variable speed angle grinder that's part of the ever-expanding Makita 18 volt LXT lithium-ion battery cordless range. It's powered by a Makita brushless motor for longer run time, increased power and speed, and longer tool life. For the most demanding applications, Makita’s exclusive Automatic Torque Drive Technology or ADT technology automatically adjusts speed and torque during operation for optimal performance. The DGA463 is ideal for grinding and cutting a wide range of materials including tile, concrete, pipe, conduit, and more. Another included feature is Active Feedback sensing Technology or AFT, that turns the motor off if rotation of the wheel is suddenly forced to stop. Electric brake stops the grinding or cut-off wheel in 2 seconds or less for maximum productivity Active Feedback sensing Technology turns the motor off if rotation speed suddenly slows or wheel is forced to stop Automatic Torque Drive Technology adjusts speed and torque during operation for optimum performance The BL Brushless Motor eliminates carbon brushes, enabling it to run cooler and more efficiently for longer life Variable speed control dial allows manual RPM adjustment (3000-8500) to match the speed to the application Slide switch with lock-on for operator convenience Soft start suppresses start-up reaction for smooth start-ups and longer gear life Anti-restart protection engineered to prevent motor startup when battery is inserted with paddle switch in the on position Efficient Brushless motor is electronically controlled to optimise battery energy use for up to 50 percent longer run time per charge The electronically-controlled Brushless Motor efficiently uses energy to match torque and RPM to the changing demands of the application 3-stage L.E.D gauge indicates battery charge level Spiral bevel gears for smoother rotations and a more efficient transfer of energy Removable wire mesh intake covers are engineered to prevent debris from entering motor Extreme Protection Technology (XPT) is engineered for improved dust and water resistance for operation in harsh conditions Rubberised soft grip provides increased comfort on the job