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 4 400 bpm Anti-Kickback Clutch No 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 1.7 ft-lb Battery Series M18 Charger Included No Clutch Style Slip Clutch Drill Chuck Type Keyless