This PROTO 2000 PA HO Locomotive (No. 21663) is a great addition to any model railroad collection. It features a DC power type and is ready to go with its pre-built assembly status. The locomotive has a Co-Co wheel configuration and is made of high-quality plastic material. The scale of this locomotive is HO and it is graded as C-8 Like New, meaning it is in excellent condition. The control system is analog and it runs on a 2-Rail-2-Conductor rail system. The corporate roadname is GM&O (Gulf Mobile & Ohio) and it was manufactured in China. This diesel locomotive is a wonderful toy and hobby item for train enthusiasts and collectors.