The Bettendorf double truss truck was introduced in the 1930s by U.S. railroads and was allowed to be used in interchange service through 1993. Kadee's #500, #502 & #550 represent 50-ton trucks for 100,000 pound cars.

Truck Features:

Ready-to-mount metal Whisker(R) couplers
Code 110 (.110) 33h smooth back wheels
Accurate markings
Incredible detail true to prototype
Non-magnetic metal wheels
Highly flexible sprung trucks
Metal side frames and fully sprung bolster
Smooth tracking free rolling contoured insulated axles
RP-25 free rolling wheels

Mounts with a #2 or 2-56 screw (sold separately).