Bosch 4-Amp 18-volt Variable Brushless 1/2-in square Drive Cordless Impact Wrench (2 Batteries) GDS18V-221B25

The Bosch GDS18V-221B25 18V EC Brushless 1/2 In. Impact Wrench with Friction Ring and Thru-hole is designed for driving high-torque bolts, nuts, and anchors. This impact wrench features Auto Bolt Release, which stops rotation when there is no torque on the tool to prevent accidentally dropping bolts and nuts during removal. The tool also has Bosch’s hammer-and-anvil system, which delivers great impact energy. The efficient EC Brushless motor features a long runtime and delivers up to 221 Ft.-Lbs. of torque, 0-3,400 no-load ipm and 0-2,400 no-load rpm. This wrench was built with a compact design; it has a 6.4 In. head length and a weight of just 2.77 Lbs. The kit includes two next-gen CORE18V 4.0 Ah compact batteries. Each keeps the power and runtime, while losing the weight, with 21700 cell technology. The CORE18V exceeds the power of the original two-layer 4.0 Ah battery with half the number of cells. It features the CoolPack 2.0 heat-management system for extended runtime and battery lifetime.Impact wrench design – built to deliver high torque for tightening such fasteners as lag bolts, concrete anchors and lug nutsPowerful motor – delivers up to 221 Ft-Lbs of torque to drive large fasteners quicklyAuto Bolt Release – stops rotation when there is no torque on tool to prevent accidentally dropping bolts and nuts during removalCompact CORE18V 4.0 Ah Li-ion battery – engineered to provide next-gen power and runtime, while losing the weight, for optimized performance-to-weight ratioDelivers 221 Ft-Lbs of torque, ideal for fast tightening and removing of heavy-duty fastenersCompact tool design – weighs only 2.77 Lbs (tool only, not including battery) and has a 6.4 In head lengthErgonomically designed cover and grip – features soft grip for comfort and keeps the head of the tool cooler during usageLED light – illuminates dark work areasHigh-power battery cells – uses enhanced 21700 cell technology, combined with advanced battery design for greater efficiency, to produce longer runtime