Panzerwerk tracks have been 3D designed and printed. The tracks links are joined using pins like the real ones and therefore remain workable after assembly.
Currently their catalogue has tracks for the Sherman (nine types), Panzer III/IV including Ostketten, Winterketten and other variants, Tiger, Panther, Tiger II, Comet... and it is growing.
You can check the full range and order directly on Panzerwerk Designs website