A pair of tracks for tanks and tractors. The model was created in Blender. In the Blender version most of the modifiers are in place, so you have quite some freedom to make changes. Objects that can be subdivided are in their separate layer. The important objects are UV unwrapped and the faces are non-overlapping in the UV space. I also made sure that objects have reasonable names (not like cylinder.001) Wheel diameter is 80cm and the width is about 41.5cm.