1:20.32 scale wheels

These wheels are 1:20.32 scaled for a 24" center with a 2 inch tire to equal 28" in total diameter. I printed these for my 1:20.32 scale 0-4-0 frames.
I've printed these in Polished Nickle stainless steel with very good success in fact the wheels did not need to be trued, they were perfectly round. I expect this to be a fluke and not something to count on. Shapeways guarantees 1% accuracy for stainless steel.
I'm also offering a set of connecting rods in the same scale. Although the parts are all completed I am taking my time printing them out and offering them till I have enough funds to print. I've attempted printing this engine out completely in HO scale and was surprised at how much was actually printed out. I will offer all parts in other materials upon request and only if they pass initial inspections.