Large-hole Torus 120

I have posted two isomers of T120 last November.

http://thebeadedmolecules.blogspot.com/2006/11/carbon-240.html

Both of these two isomers have the same type of inner-rim. The arrangements of the pentagons in the outer-rim for these two isomers are related to each other through Stone-Wales transformation.

Here is the beaded model with 10mm faceted beads for another isomer of T120. This one has larger hole due to the relative position among the heptagons in the inner-rim. The perimeter around the girth is also smaller than those of previous two isomers.