The F3 diesels feature vertical dual motors with brass flywheels; 8-wheel drive; three-position E-reversing unit linking all units (PowerLink(TM)); diecast trucks, wheels, pilot, couplers, fuel tank and horns; Quadra-Grip(TM) traction; operating headlight, MARS light, front coupler and lighted cab ("A"); metal chassis and grab rails; portholes with lenses; separate side vents; stainless steel side grills and roof vents; freely rotating roof fans; brass air filter and relief valve; and illuminated number boards. Also includes Real Sounds(R) digital sounds.