When you need the help of high torque levels with minimal effort, an impact wrench is the perfect solution. Energy is stored inside the cylindrical core of the tool — and then delivered in short, sharp bursts to the shaft. This is a great product to have at your disposal when you need to free a rusted bolt or remove an overtightened screw. Handy features to look out for include trigger-controlled speed, an LED light, a brushless motor and multi-stage impact power selection.