The HO MDC Roundhouse 3 Truck Shay Loco Kit #370 is a vintage unassembled model train locomotive kit. This black and silver steam locomotive features a 3 truck Shay wheel configuration, made of pressed steel, plastic, and diecast materials. It is a 1:87 scale model with an analog control system, designed for HO gauge railroads with a 2-rail-2-conductor system. This undecorated locomotive is perfect for creating a realistic steam train layout with the brand's reputation for quality craftsmanship.