Milwaukee 2456-21 M12 Cordless 1/4" Lithium-Ion Ratchet Kit Powerful 12-volt motor: Delivers up to 30 ft-lbs of torque Superior fastening speed: Produces 250 RPM, with variable-speed trigger for greater control REDLITHIUMTM Battery Technology: Superior pack construction, electronics, and performance deliver more work per charge and more work over pack life than any battery on the market REDLINKTM Intelligence: Provides optimized performance and overload protection using total system communication between tool, battery and charger Kits include the tool, a charger, and a single M12 Red Lithium battery.