Get your semi truck Ready for the Road Ahead™ with improved wire, cable, and hose protection, with the Grote 4" Round PVC Grommet. This replacement ring neatly fits around the rim of a hole to prevent wires from being shredded, cut, or damaged. Engineered with an easy-to-install design that doesn't require any specialized tools. FleetPride is your First Click in Heavy Duty®.