Powerful 7.5 Amp (850 Watt) motor produces an amazing 450 ft/lbs of tightening torque (class leading) to tackle the toughest jobs with ease Most compact and lightweight impact wrench in its class Double insulated cast aluminum body (IDI- Internal Double Insulation Technology) provides strong protection for the motor, greatly increasing durability and extending tool life Large heat-resistant bumper protects the tool, workpiece and the user Forward/Reverse rocker swithc to quickly change fastening direction Slip resistant elastomer handle improves grip and minimizes user fatigue