Perfect for the shell dragster with enclosed rear wheels. Each of Pitsco’s Premium Inside Front Wheels is precision machined from black acetal – not injection molded like standard wheels. Acetal’s excellent dimensional stability, toughness, and abrasion resistance result in wheels with perfect balance, consistent weight, and true roundness. This set includes two wheels and two axles. One enables the wheels to spin freely on the axle, and the other is a friction fit.