IW12SHD Super Heavy-Duty Impact Wrench, 1/2" SocketWith an ultra compact design for confined workspaces, these super heavy duty impact wrenches produce 1100 ft lb of max torque in reverse The twin hammer mechanism reduces vibration and increases durability Made from lightweight and durable aluminum, the impact and chemical resistant housing protects against repeated drops and exposure to shop fluids Weighing only 4. 4 lb., these Drive Air Impact Wrench has a lightweight and balanced design Socket