These trucks were used under Missouri Pacific’s express boxcars in passenger service as well as other railroads with passenger express needs. The all brass model is built in Korea by Boo Rim, fully equalized, runs on steel wheels that take a nice shinny finish on the tread for that authentic running look, and ball bearings at each axle end in journal boxes with removable journal box retainers, and working journal covers; painted flat black. .2mm shouldered mounting screws and springs included. Proto:48 $64.95/pair.