Cordless Hammer Drill Kit, Voltage 20.0 V, Battery Included, Chuck Size 1/2 in, Brushless Motor No, No Load RPM 0 to 575/0 to 1350/0 to 2000, Blows per Minute 0 to 9775/0 to 22,950/0 to 34,000, Max. Torque Not Specified, Max. Power 535UWO, Battery Included (2) 21RV47, Cordless Tool Battery Type Li-Ion, Battery Capacity 4.0Ah, Tool Length 10 1/4 in, Tool Weight 5.2 lb, Clutch Style Adjustable, Handle Type T-Handle, Battery Pack Replacement 21RV47, Features LED Worklight