The K-Line 6-30064 Pennsylvania Speeder Set is a ready-to-go pre-built model train set that features a locomotive from the Pennsylvania Railroad. This O gauge set operates on a three-rail system with analog control, making it suitable for collectors aged 17 years and up. While the set includes missing links between the cars, it is still a valuable addition for model railroad enthusiasts looking to enhance their transportation-themed collection with a piece of history from the iconic Pennsylvania Railroad.