Assuming you are asking about a Veeder-Root, your request is to broad. What model V/R do you have? Are you looking for one wheel or a set or two sets, one for each side?
I have NOS pricer wheels, but they are white numbers on black, I have complete sets, it might be easier to replace all the wheels than trying to find individual wheels.
Author, Gas Pump Identfication books 1st & 2nd Editions & Air Meter Identification books
We rebuild ECO air meters and sell parts.