ACDelco P20 series 20V Li-ion 1/2" Impact Wrench Kit, 1, 260 ft. -lbs. Nut Busting Torque, 1-Battery (4. 0Ah), ARI20170P20 Series Tools are designed with Power-for-Pros. FEATURES * HIGH PERFORMANCE 4-pole high performance heavy duty motor delivers up to 945 ft. -lbs. max. reverse torque (Nut-busting Torque: 1, 260 ft. -lbs. ) * EFFICIENCY: Variable speed with reversible control and electric brake switch for ultimate control (No Load Speed: 0-1, 700 RPM) * Heavy duty ½” square drive with a friction ring design to ensure quick and easy socket changes * Built-in LED light and Premium rubber over mold withstands corrosive materials and provides increased comfort and visibility when in use * P20 battery platform. Share Battery with other P20 tools SPECIFICATIONS * Voltage: 20VDC * Drive : 1/2" Square * Nut-Busting Torque : 1, 260 FT-LBS (1, 705 Nm) * Max. Reverse Torque : 945 FT-LBS (1, 280 Nm) * LED Run Time: up to 60 hrs. (4. 0Ah battery) * Max Tightening Torque : 630 FT-LBS (850 Nm) * No Load Speed : 0-1, 700 RPM * Impacts per Minute : 0-2, 000 IPM * Tool Weight : 7. 04 LBS (3. 2 kg) Disclaimer: Nut-Busting torque rating are tested in manufacturer's facility and subjected to various conditions, including temperature, tested bolt size/type and equipment. While max. torque rating is continuous torque power produced by the tool measured with Skidmore, or equivalent, tester.