This is a 2006 Freightliner Columbia double buck truck tractor. It is powered by a 515 HP Detroit Diesl and has a 13 speed transmission and Air ride suspension. This truck shows 1,021,993 on the speedometer but had an in frame about 298K miles ago. Paper work is available for inspection. It has polished aluminum wheels all the way around. This is a very clean and well maintained truck. This truck and trailer fit into the category of semi, tractor trailer, truck, flatbed trailer, day cab, single axle tractor and diesel. Ray and Bobs Truck Sales, Inc., 1903 W Buckeye, Phoenix, Arizona 85009, 866-552-5667 or 602-271-0888. rayandbobs.net