The DEWALT 20V MAX Cordless 4-1/2 Inch Paddle-Switch Angle Grinder features a paddle switch design for added operator safety, preventing accidental start-up. A high-performance brushless motor delivers maximum power and efficiency with longer motor life and extended runtime per charge. The tool-free guard and wheel changes with quick-release nut allow fast accessory swaps on the job. An electronic brake stops the wheel quickly after the trigger is released for enhanced safety. This bare tool is compatible with all DEWALT 20V MAX batteries.