Cordless Hammer Drill/Driver Kit, Voltage 18.0 V, Battery Included, Chuck Size 1/2 in, Brushless Motor Yes, No Load RPM 0 to 500/0 to 1700, Blows per Minute 0 to 7500/0 to 25,500, Max. Torque 350 in-lb, Max. Power 7039W, Battery Included 33RT41, Cordless Tool Battery Type Li-Ion, Battery Capacity 2.0Ah, Series 18V LXT, Tool Length 6 15/16 in, Tool Weight 2.9 lb, Clutch Style Adjustable, Handle Type Pistol Grip, Battery Pack Replacement 33RT41