Universal 16 or 16.5" Custom D.O.T. Liner 4 Hand Hole Polished Wheel Simulator Set by Phoenix USA. With 8 Lug Holes, Diameter: 16 or 16.5", Bolt Pattern: 8 x 6.5", Installation: Bolt-On, Material: Stainless Steel, Placement: Front and Rear, Quantity: 4 Pieces. Mounts to 16" and 16.5" diameter by 6" wide, dual wheel tandem trailer applications. Pop out centers allow access to hubs.