The W9691 impact wrench is a 1-inch-drive cordless industrial power tool used for removing and installing threaded fasteners, such as the lug nuts on semitrucks. It produces more torque for heavy-equipment repair applications without sacrificing size or ergonomics. It is designed to optimize power, control, durability, and access for the mobile service technician who performs truck service, construction equipment repair, and railroad maintenance. It also fits very well into many industrial applications, such as oil and gas, power generation, and steel construction.