For use with USA Trains/Aristo-Craft Tranins locomotives. Improve the performance of your rolling stock with these nickel-plated, nonmagnetic, nonrusting brass wheelset. Designed to replace stock wheels on Lionel, Aristo-Craft (REA), LGB Bachmann and Delton models. Sizes shown indicate the diameter of the wheel in scale inches and the width of the tread. Smaller tread width may require track modifications to insure good equipment performance.