Prepare your semi truck to be Ready for the Road Ahead™, with the National Vacuum Equipment 1-1/4" E20 Coupler Flex Element that seamlessly connects a vacuum pump to its drive source. With a simple design, this replacement component helps transfer power, while acting as a reliable connection for the system. Built with a robust construction and high degree of torsional flexibility. FleetPride is your First Click in Heavy Duty®.