Lionel 2331280 O Scale Vision Line 4-8-8-4 Big Boy Steam Loco Union Pacific UP 4021 (Silver/Gray Scheme) Transformers One-touch 180-degree bridge rotation in

One-touch 180-degree bridge rotation in either direction

ScaleTrains 33474 Rivet HO Scale GE Dash 9 (C44-9W) Chicago NorthWestern OLS CN&W 8727 DCC LokSound

8mm thickness polycarbonate

20x M4 x 20mm long threaded shaft (set screws)

Lionel 2331280 O Scale Vision Line 4-8-8-4 Big Boy Steam Loco Union Pacific UP 4021 (Silver/Gray Scheme) Transformers One-touch 180-degree bridge rotation inLionel 2331280 O Scale Vision Line 4 8 8 4 Big Boy Steam Loco Union Pacific UP 4021 (Silver Gray Scheme) Big Boy the locomotive needs no further introduction. Union Pacific's twenty five 4 8 8 4s have been turning heads and leaving lasting impressions since the day they first rolled out of the erecting shop. For all that has been said of their size, the Big Boys were just as impressive for their performance. Today, 4014 is the pride of the railroad