This HO scale Proto 1000 PRR Pennsylvania RR 9508 F3A Powered Diesel Engine is a perfect addition to any model train enthusiast's collection. Its DC power type and ready-to-go assembly status make it easy to use, while its two-rail system ensures smooth operation on any track. The locomotive is a replica of the F3A and features the corporate roadname of PRR. It's a great representation of transportation history and a must-have for any model railroad and train enthusiast. The analog control system and gauge of 1:87 ensure precise control and accurate representation of the locomotive in action.