Smooth wheelsets are most commonly found on all diesel era rolling stock. Kadee wheelsets are manufactured to the most exacting standards and feature: RP-25 contour, non-magnetic metal wheels and insulated needlepoint axles, Wheelset Features: * Code 110 * Accurate markings * Incredible detail true to prototype * Non-magnetic metal wheels * Smooth tracking free rolling contoured insulated axles * RP-25 free rolling wheels * Needlepoint Axles * Freight & Passenger