The Peterbilt 579 is a class 8 on-highway tractor that is the most fuel-efficient and technologically advanced truck the company has produced to date. This 1:87 HO Scale set features a red Peterbilt 579 Sleeper Cab, Lowboy Trailer, and a Caterpillar D5M Track-Type Tractor. Whether you are planning a 1:87 scale diorama or using the vehicles as models on a HO Scale train layout, the lowboy sets are excellent value! Made of Diecast metal and plastic components. Includes Peterbilt 579 Cab, Lowboy Trailer, and CAT D5M Dozer. Truck and trailer can be joined together or disconnected. 579 Cab features detailed interior, rolling wheels, and headache rack. Lowboy trailer features rolling wheels and simulated wood deck finish. Authentic CAT Trade dress, paint, and decals.