Non-air pumping beat piece eliminates masonry dust from entering the unit extending tool and seal life. Spring-loaded dust seals ensure longer tool life. Variable impact control dial (19 settings) ensures accurate impact energy depending on the application. One-step chisel rotation (12 positions) allows the user to quickly and accurately adjust the chisel, not the tool . Variable position side handle allows 360. In-line design for easy operation of tool in horizontal or vertical applications . SDS max tool holder with rubber dampers absorbs energy providing longer life.