Cordless Hammer Drill/Driver, Voltage 18.0 V, Battery Included, Chuck Size 1/2 in, Brushless Motor Yes, No Load RPM 0 to 500/0 to 2000, Blows per Minute 0 to 7500/0 to 30,000, Max. Torque 530 in-lb, Max. Power 12541UWO, Battery Included Mfr. No. BL1820B, Cordless Tool Battery Type Li-Ion, Battery Capacity 2.0Ah, Series 18V LXT, Tool Length 7 1/8 in, Tool Weight 2.8 lb, Clutch Style Adjustable, Handle Type Ergonomic, Battery Pack Replacement Mfr. No. BL1820B