The CT660 was an on-highway vocational truck introduced by Caterpillar in 2011. Powered by a 550HP CAT CT13 engine, the CT660 truck was a popular vehicle for a variety of applications, including as a heavy haul tractor. This 1/87 HO Scale set features a CT660 Cab, Lowboy Trailer, and a Caterpillar 163H Motor Grader. 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!