Cordless Rotary Hammer, Voltage 18 V, Chuck Style SDS-Plus, Solid Bit Optimal Drilling Range in Concrete 5/16 in to 5/8 in, Core Bit Capacity in Concrete 1 in, Blows per Minute 0 bpm to 4,800 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 2 1/2 in, Impact Energy 2.0 ft-lb, Battery Series M18, Charger Included No, Drill Chuck Type SDS Plus