Outfit your semi truck to be Ready for the Road Ahead with improved wire, cable, and hose protection, with the Truck-Lite 40 Series Round Open Back PVC Grommet. With a straightforward design that neatly fits around the rim of a hole, this replacement ring is able to prevent wires from being shredded, cut, or damaged. Manufactured with an easy-to-install design that doesn't require any specialized tools. FleetPride is your First Click in Heavy Duty .