Union Pacific 3900 Series 4-6-6-4 Challenger drawings, engine only- Driving Wheel Center – Main (3,4,5)
		SKU/Drawing Number: GSC 53255
			| Wheel Arrangement: | 4-6-6-4 | 
| Scale to 1 ft.: | 3” | 
| DWG. Size (in): | 24x38 | 
| Drawing Title: | Driving Wheel Center – Main (3,4,5) |