Outfit your semi truck to be Ready for the Road Ahead with advanced lug nut protection, with the Power Products 33mm Plastic Flange Lug Nut Cover. To help reduce damage from the elements, this replacement cover works to shield the lug nuts from dirt, debris, moisture, and other harmful elements. Fashioned with rugged plastic materials to be suitable for both truck and trailer tires. FleetPride is your First Click in Heavy Duty .