This is a power tool for drilling holes and shattering concrete etc. With a highly efficient brushless motor and an optimized blow mechanism, the tool has the highest punching speed (20% more than conventional model) and chipping ability (30% more volume than conventional model). To lighten the stress on operators, vibration has been reduced (26% less than conventional model) by means of a weight that resonates with the tool’s vibrations and an elastic body structure which joins the main unit to the handle. Durability has also been improved with a motor housing composed of a two-layer structure of high-rigid aluminum and plastic.