Prepare your semi truck to be Ready for the Road Ahead , with the ATD 1/2" x 50' 4-Spiral Rubber Air Hose that allows for the rapid transfer of various fluids. Thanks to its durable design, this replacement hose is the ideal option to transport fluids throughout a vehicle's hydraulic or pneumatic system. Constructed with an EPDM rubber coating to be resistant to water, weather, and oil. FleetPride is your First Click in Heavy Duty .