The HO Roundhouse ALCO RS3 Kit Locomotive Undecorated is a 1:87 scale model of a black ALCO RS-3 replica, perfect for model railroading enthusiasts. This unassembled kit includes press, plastic, and diecast materials, with a Bo-Bo wheel configuration and analog control system. The locomotive features a two-rail system, light function, and stands at 2 inches tall, making it a detailed and realistic addition to any transportation-themed railroad layout. Made by Roundhouse in the United States, this undecorated locomotive offers plenty of customization options for hobbyists looking to enhance their collection.