DCG422B: Complete high-powered applications in tight spaces with the ATOMIC 20-Volt MAX Right Angle Die Grinder that delivers optimized maneuverability and up to 455 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 this tool to access ultra tight spaces. Replace pneumatic die grinders with this cordless solution that delivers untethered performance, productivity, and pneumatic-like power. DCBP320C: The 20-Volts MAX XR Power Stack 3.5 Ah battery delivers 50% more power and a longer lifespan. Engineered with pouch cell technology, our best performing 20-Volts MAX 3.5Ah battery powers through tough jobs, day in and day out. XR Power Stack batteries are a part of our best performing line of 20-Volts MAX batteries and are compatible with 20-Volt MAX tools. Includes both DCG422B and DCBP320C.