ScaleTrains 32919 HO Scale EMD SD45 Penn Central PC 6131 Auto Reverser - DCC The expansion board is actually

The expansion board is actually two identical boards in one as shown above

It's never been easier to get started in model railroading

(2) 30x30x10mm Turbo High Speed Fan

And with an ElectroCoupler

thread-locking compound

ScaleTrains 32919 HO Scale EMD SD45 Penn Central PC 6131 Auto Reverser - DCC The expansion board is actuallyScaleTrains 32919 HO Scale EMD SD45 Penn Central PC 6131 With countless railroad, road number, and era specific details, the Rivet Counter HO Scale SD45 is the definitive model of this ground breaking high horsepower locomotive. First built in 1966, the SD45 served numerous Class I railroads and eventually secondhand owners and shortlines. Most including rebuilds were retired by the early 2000s. FEATURES: Era: early 1970s to mid 1970s Phase Ib1 Road