Rapido Trains 171056A HO Scale B-50-16 Boxcar Southern Pacific "Overnight Scheme" SP # Varies Era_2000-2003 The acid is used for

The acid is used for the removal of oxidation

although one of them suffered a wreck in 2005 and has since been used as a parts source for the other units

Super easy to set and install with no need for set up tools and uses your stock heavy duty arms

but also the forward

Rapido Trains 171056A HO Scale B-50-16 Boxcar Southern Pacific "Overnight Scheme" SP # Varies Era_2000-2003 The acid is used forRapido Trains 171056A HO Scale B 50 16 Boxcar Southern Pacific "Overnight Scheme" SP # Varies Beginning in 1925, the Southern Pacific built nearly 5,000 40 outside braced wood boxcars in two classes B 50 15 and the B 50 16. These cars were built to nearly identical designs, the primary difference being in the ends used. The 3900 cars in the earlier B 50 15 class used corrugated steel ends, while the 1003 cars in class B 50 16 used Dreadnaught ends.