These shafts are for the 94102, 94106 and 94108 vehicles.
The best way to work out whether you require 02033 or 02168 or 08064 is to look at the steering componets.
Lookup part 102010 Front C Hub. If you have this plastic OR aluminium C Hub then you have either the 94102 car, 94106 buggy, or 94108 truck and therefore require part 02033.
Lookup part 122011 Front Steering Hub. If you have this plastic OR aluminium Steering Hub then you have either the 94122 car or 94166 buggy and therefore require part 02033.
If you have the 122011 and its a truck then you require 08064.