The Bosch impact driver kit delivers cordless and socket-ready flexibility with corded driving performance. It comes with two CORE18 V batteries and an 18 V charger for all-day jobs. The two-in-one driver has both a 1/4 In. quick-change hex and a 1/2 In. square drive chuck. Its EC brushless motor provides to 1,650 In.-lbs. of torque, and the hammer and anvil system delivers max impact endurance. The battery is the best-built battery on the planet*, with next-gen Li-ion technology that produces 80% more power than previous cells.Two-in-One chuck on impact driver – features a 1/4 In. quick-change hex and 1/2 In. square drive chuck that drives both bits and socketsHigh-power CORE18 V cells produce 80% more power than previous-gen batteriesEnhanced CORE18 V battery design provides up to 20% longer runtime than previous-gen 6.0 Ah batteries18 V charger charges the CORE18 V to 80% in 41 minutes and to 100% in 55 minutesDelivers a max of 1,650 In.-lbs. of torque and up to 3,200 BPM for professional powerPerformance Control System on tool – adjusts the impact driver's three torque and speed settings for precise fasteningHammer and anvil system on driver – designed for maximum impact enduranceThree-LED light design – on the head of the impact driver provides outstanding illumination of work areaLonger belt clip on driver – allows convenient storage on jobsite with redesigned longer belt clip