I think they call them the "B" pattern. ...I had a set of Dominion tracks, prior to these, and they were junk from the get go....but I still squeaked 900hrs out of them. The Solideal tracks ride good and get great traction too. If it's really muddy and slippery you have be a little careful when applying power to the tracks...if you apply the power slowly, you can crawl out some pretty slippery places. They are good in snow too.
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