The DeWalt 20V MAX ATOMIC 4" Angle Grinder, No. DCG400B, is designed to help users complete high-powered applications in tight spaces, delivering optimized maneuverability and 755 MWO. This tool is equipped with the DeWalt ANTI-ROTATION System to help maximize control. This feature quickly stops the wheel when a pinch, stall, or bind-up event is sensed, reducing reactionary torque. An ergonomic design allows access to ultra tight spaces, while the clip-on guard can convert a Type B guard into a Type A.