What's the size difference of vandolite magnetic track light?

Vandolite magnetic track light with various options:

•       Standard track system       W39*H78mm(linear/ curvy)
•       Mini track system           W28*H58mm (linear/ curvy)
•       Ultra slim track system       W28*H29mm
•       Linear up-down track system  W28*H63/87mm
•      10mm width (new)