Update your semi truck with properly inflated tires, with the Milton Inflator Gauge with Dual-Head Straight Foot Air Chuck that ensures you're Ready for the Road Ahead. By acting as a gauge and inflator combo, this replacement device is able to measure and inflate a tire's pressure level as needed. Constructed with a full-swivel chuck extension and pressure release valve to vent excess levels. FleetPride is your First Click in Heavy Duty.