Impact wrenches are for heavy-duty tightening or loosening of nuts and bolts. They allow you to achieve high torque socket wrenching with minimal effort. Using either battery power or compressed air, impact wrenches are easy to use and offer a level of socket drive difficult to achieve with a manual tool. Sometimes referred to as impact guns or air wrench, these tools are often used in automotive repair shops, product assembly and in construction.Air or Battery powered Impact Wrenches?Compressed air is a popular power source. They are often a more affordable option, and do not require a power source. Cordless impact wrenches are usually more powerful but require recharging as they are battery powered.Our impact wrenches are available for socket drive sizes from 1/4in up to 1in, with high and low speed models available in various lightweight and ergonomic designs.