Arch Bar Self-Centering HGC Trucks Code 110 (.110") 33" Ribbed-Back RP-25 Wheels 1 Pair by Kadee Quality products / HO Scale Two-piece fully equalized trucks mount with a #2 or 2-56 screw, sold separately. The self-centering action trucks self align themselves parallel with the car for easier placement on track. The Arch Bar truck is typical of these trucks from around the turn of the century. Despite the age of these trucks, they saw more than seventy years of service in some applications. The arch bar was allowed in interchange service until about 1941. On railroads that were not common carriers such as logging or other industrial lines, this restriction of the trucks did not apply since the trucks did not operate on rails other than the owner's. The Northern Pacific, for example, used truss rod frame maintenance of way cars fitted with arch bar trucks well into the early 1970s. Many logging railroads also used them at least until then. Truck Features: * Self Centering Action - Trucks self align themselves parallel with the car for easier placement on track * Code 110 (.110) 33" ribbed back wheels * HGC weighs nearly the same as metal trucks * Superior rolling ability * Brake pads * Accurate markings * Incredible detail true to prototype * Non-magnetic metal wheels * Highly flexible fully equalized trucks * Smooth tracking free rolling contoured insulated axles * RP-25 free rolling wheels