2 Piece, 18V, LXT, Lithium-Ion, Brushless, Cordless, Combo Kit , Includes: 18V LXT Compact Brushless 1/2" Hammer Driver Drill & 18V LXT Brushless Impact Driver, Features Efficient BL Brushless Motor Is Electronically Controlled To Optimize Battery Energy Use For Up To 50 Percent Longer Run Time Per Charge, The Bl Brushless Motor Eliminates Carbon Brushes, Enabling The Bl Motor To Run Cooler & More Efficiently For Longer Life, The Electronically-Controlled Bl Brushless Motor Efficiently Uses Energy To Match Torque & Rpm To The Changing Demands Of The Application, Variable 2-Speed 1/2" Hammer Driver-Drill 0-500 & 0-2,000 RPM With BL Motor Delivers 530 IN/LB Of Max Torque, Variable Speed Impact Driver 0-3,400 RPM & 0-3,600 IPM Delivers 1,500 IN/LB Of Max Torque, Includes: (2) 18V LXT Lithium-Ion 4.0Ah Battery, 18V LXT Lithium-Ion Rapid Optimum Charger & Tool Case.