Cordless Rotary Hammer, Voltage 18 V, Chuck Style SDS-Plus, Solid Bit Optimal Drilling Range in Concrete 3/8 in to 3/4 in, Core Bit Capacity in Concrete 1 1/8 in, Blows per Minute 0 bpm to 4,600 bpm, Anti-Kickback Clutch Yes, Modes of Operation Hammer and Rotate, Hammer Only, Rotate Only, Brushless Motor Yes, Cordless Tool Kit Contents (1) Bare Tool, Core Bit Capacity 4 in, Impact Energy 3.6 ft-lb, Battery Series M18, Charger Included No, Drilling Capacity in Concrete 4 in