Rotary Hammer Kit 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 4400 bpm Anti-Kickback Clutch No Modes of Operation Hammer and Rotate Hammer Only Rotate Only Brushless Motor Yes Cordless Tool Kit Contents (2) Bare Tools (2) Batteries Battery Capacity 6.0Ah Core Bit Capacity 2 1/2 in Impact Energy 1.7 ft-lb Auxiliary Handle Positions Not Specified