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Why the tractor caterpillar?

You've probably seen that the tractor is not only the wheels, but the steel tracks. They made of separate parts, called tracks, hence the name. Caterpillars help the tractor to travel where other machine gets stuck and stuck in the swamp, snow, and sand. And this is because the caterpillar is a kind of track without beginning and without end. This steel trail stretches under the tractor, and bumps are not afraid of him.


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