Cordless Hammer Drill, Voltage 18V DC, Cordless Drill Class Compact Premium, Chuck Size 1/2 in, Drilling Capacity in Concrete 5/8 in, Drilling Capacity in Wood 4 in, Number of Speed Settings 2, Number of Clutch Settings 16, Maximum Working Torque 1,400 in-lb, Blows per Minute 0 to 33,000, Maximum Blows per Minute 33,000 bpm, Minimum Blows per Minute 33,000 bpm, Brushless Motor Yes, Cordless Tool Kit Contents (1) Bare Tool, Battery Capacity 5.0Ah, Battery Series M18 REDLITHIUM