This RSO HO Pennsylvania #21 GE 35 Yard Switcher Diesel Locomotive is a great addition to any model railroad enthusiast's collection. The locomotive features a silver color with Bo-Bo wheel configuration and is made of plastic material. It was manufactured in 1967 and operates on an analog control system with a gauge of HO and a 2-Rail-2-Conductor rail system.This locomotive is a replica of the GE 35 and was in excellent working condition when last checked. Add this locomotive to your collection today!