1)fifth wheels (2" and 3.5"),
2)king pins (2" and 3.5",weldable and Bolton),
3)suspensions (bogie, spoke bogie, American suspension and German suspension etc),
4)axles (American and German, BPW type , spoke axle, low loader, concave axle),
5)landing gears (inboard gear and outboard gear),
6)other components like twist container locks, screw locks, brake chamber, wheels, tires, and other functional components are also available.