Code 110 (.110") 33" Ribbed-Back RP-25 Wheelset (Package of 12) by Kadee Quality products / HO Scale Ribbed wheelsets are most commonly found on steam 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