The HO PIKO D&RGW KRAUSS MAFFEI ML-4000 DCC & SOUND #4001 is a detailed model of a diesel locomotive replica of the ML-4000 in yellow color. This HO scale locomotive features a Co-Co wheel configuration and is made of pressed steel, plastic, and diecast materials. With digital control and sound function, this ready-to-go unit from PIKO is perfect for model railroad enthusiasts interested in transportation-themed displays. Made in Germany, this vintage-inspired locomotive is a great addition for collectors looking for a high-quality replica of the D&RGW Denver and Rio Grande Western Railroad.