This set offers a 1 battery version of the DCF850E2T Powerstack impact driver Features Ultra compact tool at only 100mm is very comfortable to use and fits in confined spaces 1/4" (6.35mm) 'drop in' bit holder allows for quick, one handed fitment Durable design with less bit run-out offers more accuracy, durability and improved user experience High power yet extremely compact Brushless motor outputs up to 205Nm of torque and ensures heavy applications are completed quickly Compatible with all DEWALT 18V XR battery packs 3x LED "Halo" light ring offers excellent work piece lighting Application control is achieved through 3 motor speed and torque settings including Precision drive which offers improved control in delicate applications to prevent over tightening/stripping. Precision Drive mode offers additional control in screwdriving applications to avoid material and fastener damage Powerstack Technology POWERSTACK battery technology - the most powerful, compact and lightest weight battery Get ready for performance like you've never seen before. The 18V Dewalt Powerstack Compact Battery utilizes revolutionary stacked pouch battery cell technology Packed with power - delivers 50% more power and features stacked pouch battery cell technology Works in tight spaces - Maximize space in your toolbox and get into hard to reach areas with a battery engineered 25% smaller Won't weight you down - Work overhead with a powerful battery weighing in 15% lighter Low impedance construction increases power. Delivers more power (v DCB183) Superior thermal performance versus cylindrical cells, thus increasing recharge cycles Smaller than cylindrical cell batteries (no wasted space) Compatible with all 18v Tools Users General tradesman Interior installation Dry liners Electricians Heating and plumbing engineers HVAC installers Carpenters Cabinet installers Fabrication shops Applications Fastening/unfastening screw