6 mm (corresponds to R1)

Model Number: 42064

Trainz Product Id: 12105458

It measures 6 inches long

The sturdy

MTH 80-31931 Union Pacific HO Scale 4-8-8-4/Modified w/PS3 #4004 ProductID_11505207 6 mm (corresponds to R1)Here is an MTH 80 31931 Union Pacific HO Scale 4 8 8 4 Modified w PS3 #4004. This features diecast construction, diecast chassis, headlight, decorative whistle, 5 pole precision motor, 2 kadee compatible couplers, ProtoSmoke, DCC receiver. Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9) Manufacturer: MTH Model Number: 80 3193 1 Road Name: Union Pacific (UP) MSRP: $599. 95 Scale Era: HO Scale Model Type: Steam Loco