Walthers PROTO 2000 HO Scale Diesel EMD F7A-B Set Powered - Standard DC - New York Central #1684 and #2440 (black, Cigar Band, white stripe) Fully assembled and decorated All-New drive 14:1 gear ratio for easy multiple-unit operations Helical gears for ultra-quiet and smooth running Five-pole, skew-wound, high torque, high efficiency can motor