These Ferrocarriles Nacionales de Mexico U18B locomotives are painted dark green, red, and yellow; the hood being green, the nose and rails are red, and the sill and steps are yellow. The large "N de M" logo on the side is in silver. Each model comes with sharp painting and lettering and fine details including etched metal grilles and radiator sections, metal grab irons and coupler lift bars. The model is equipped with the smooth, powerful InterMountain drive and is DCC ready with the NMRA 8-pin socket.