The new DeWalt 60V 1-3/4-In. SDS MAX Combination Hammer offers fast drilling even in the hardest concrete. It has an optimized drilling range between 5/8-inch and 1-1/4-inch. It includes DeWalt’s Shocks Active Vibration Control system that reduces vibration felt by the user at the handles compared to rotary hammers. A constant speed control allows the tool to maintain rpm regardless of bit size or depth. It also includes a variable speed dial for accurate hole starting and controlled chopping and demolition work.