Apply a small dab of Pro-Bore Wax to a piece of the narrow pipe cleaner.
Slide the pipe cleaner into a wheel bore and rotate the pipe cleaner so that the bore of the wheel is completely coated with wax.
Remove the pipe cleaner and set the wheel aside.
In the same way, apply wax to the other three wheels.
After thirty minutes, insert a piece of the wide pipe cleaner into the bore of a wheel.
Move the pipe cleaner back and forth to buff the wax.
Repeat for the other three wheels.
Buff any wax on the hubs as needed with a soft cloth.
Lubricate the wheels as per the manufacturers instructions.