Racing Wheel Adapters are available in a variety of configurations to adapt wheels to different bolt circle patterns. Aluminum 5 x 5 wheel adapters bolts to stock 4" or 4-3/4" bolt circle hub and adapts to 5x5 bolt circle pattern. Wide 5 Wheel Adapter allows use of Wide 5 or modified type wheels with the smaller bolt circle hubs and rear ends. Racing Wheel Adapters are NOT FOR USE ON STREET VEHICLES. We also offer a variety of billet wheel adapters that are constructed from durable, lightweight 6061 T-6 aircraft billet aluminum, which makes them perfect for trucks, racing, or other heavy-duty applications where you need to adapt different bolt pattern wheels. They include pre-installed and press-in wheel studs with radiused edges, and many include lug nuts.