The SDS-plus 1 1/8" Rotary Hammer with Quick-Change Chuck System generates up to 4,000 blows per minute, making it an outstanding choice for commercial-level demolition and construction projects. It provides an 8.0-amp motor that delivers 2.4 ft.-lbs. of impact energy, but it weighs only 7.9 lbs. for a striking impact-to-weight ratio. The quick change chuck allows the fast and simple exchange of an SDS-plus chuck. It has Vario-Lock to set the chisel into one of 12 positions for better leverage and comfort. The multi-function selector gives the user the versatility to match mode to application, rotary hammer, rotation-only or hammer-only mode. It has Vibration Control in the hammer mechanism and grip area to provide improved user comfort. The hammer provides an integral clutch for bind-up situations.