The Profi-Trac 3500 TVL model tractor is part of Schluter's 9R line of tractors. The Profi-Trac 3500 TVL is a Four-wheel Drive 4WD Tractors type, that is used mostly in Agriculture Tractors. A engine powers the Profi-Trac 3500 TVL tractor. This setup is more practical in the real world.