Equip your semi truck to be Ready for the Road Ahead™, with the American Forge 21.5" Air / Hydraulic Axle Jack, a key tool that offers enhanced safety when replacing components. By utilizing a specialized design, this lifting tool utilizes compressed air with hydraulic fluid permitting operators to safely move heavy components that would not be possible by just human strength. Built with a solid and pressure-resistant body to withstand extreme amounts of force. FleetPride is your First Click in Heavy Duty®.