Cordless Impact Wrench The W175 is the most powerful and durable cordless impact in its' class. Patent-pending IQv technology provides maximum performance, durability, and battery life. Compatible with both Lithium-Ion and Nickel Cadmium 14.4v IQv batteries. The W175 is ideal for general automotive and service work such as suspensions, front-ends, brakes, engines, and autobody jobs. Also ideal for production fastening.