DEWALT DCG440X2 FLEXVOLT 60V MAX Cordless 7 Inch Brushless Angle Grinder Kit with 2 9.0Ah Batteries Kickback Brake E Clutch and Pipeline Grip Gearcase No Lip Door Edge Bit (420 mm) Primary Materials Application (420 mm) Primary Materials Application Asphalt Dual Precision Cutting Edges: Twin outer scoring spurs slice clean hole perimeters before chip removal to prevent wood splintering and exit blowout Whether you are performing aggressive material removal on industrial steel or deep groove concrete sawing Integrated E Clutch™: Automatically shuts down the motor in less than a tenth of a second when a pinch or stall is detected