Kato 31-601 - A.S.F Ride Control Truck (2) - HO Scale

These scaled reproductions of 70-ton prototypes are two of the smoothest rolling and finest detailed freight trucks available on the market today! The wheel bearing cap of the S-2 truck actually spins while the truck is rolling. (Cap is press-fit onto end of axle by modeler. No adhesive is required, and both the S-2 and A-3 truck can be installed on virtually any type of rolling stock in your fleet.