Your dually solution! Our goal is to make it easier for Motorhome or Commercial Vehicles to check and maintain tire pressure on six-wheeled chassie. Traditionally adding air to dually tires was difficult and required the use of specially designed air chucks and specially designed air gauges just to get to the valve stem. Not anymore! We have extended the length of the inner dual valve to reach the outer dual thus making it easy to add air. We have created an outer dually valve that has three bends to point outward.