Driven by a driving wheel, surrounded by a flexible link by the driving wheel & road wheel & induction wheel & carrier wheel. Track links consist of track shoes and track pins. A track pin connects each track shoe to form a track link. Holes on both ends of a track shoe to mesh with the driving wheel, with the induction wheel in the middle to keep the track link in the right track. Reinforced anti-skid rib (referred to as pattern) on the side that contacts the ground to improve the firmness of the track shoes and the adhesion between the track links & the ground.