Equip your semi truck to be Ready for the Road Ahead , with the Truck-Lite 60 Series Oval Open Back PVC Grommet, a key piece that provides improved wire, cable, and hose protection. By neatly fitting around the rim of a hole, this replacement ring is able to prevent wires from being shredded, cut, or damaged. Built with an easy-to-install design that doesn't require any specialized tools. FleetPride is your First Click in Heavy Duty .