Cordless Hammer Drill Kit, Voltage 20.0 V, Battery Included, Chuck Size 1/2 in, Brushless Motor Yes, No Load RPM 0 to 2000, Blows per Minute 0 to 34,000, Max. Power 820UWO, Battery Included (2) 11A164, Cordless Tool Battery Type Li-Ion, Battery Capacity 5.0Ah, Series 20V MAX (TM), Tool Length 7 1/2 in, Tool Weight 3.6 lb, Clutch Style Adjustable, Handle Type Pistol Grip, Battery Pack Replacement 11A164, Features Tool Connect, Includes (2) Batteries, Belt Hook, Charger, Kit Box