Pacific Dualies carries a spectrum of quality wheel simulators. Pacific Dualies wheel simulators are designed to mount securely to vehicles with dual rear wheels, and are manufactured with quality in mind. They are manufactured from the highest grade of stainless steel. This product is a bolt-on style dually simulator for eight lug wheels with four vent holes. It is an appropriate fit for 16 inch wheels. The component parts of this wheel simulator are front wheel cover, front center cap with retainer ring , rear wheel cover, and rear center cap with retainer ring.