Prepare your truck to be ready for all types of conditions with improved wire, cable, and hose protection, with the OTR 4" Round Open Back Grommet with Expertise Built In. 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.