If you're into simulators like we have been for 44 bus year now, our 1st set was chrome on steel, we had them for about 8 to 10 years before they got to rusting really bad then we bit the bullet and spent the extra $$$ on stainless steel simulators and they are on for over 30 years and look like the day we put them on. They fit our 11-22.5 steel Budd wheels. If you're interested I could resurrect the receipt to get specifics on them.