Handle heavier freight on your HO railroad with the WalthersMainline Alco RS-2! Built from 1946 to 1950, the prototypes delivered more horsepower than the earlier RS-1, and introduced the rounded body style that defined Alcos of the period. Serving a variety of railroads, shortlines and industrial operators, many were going strong into into the 1970s and beyond. Features of this WalthersMainline model include: One time run of these roadnumbers, order now - limited quantity available! NEW updated body with Air- or Water-cooled exhaust stack as appropriate Prototypes in service 1946 to early 2000s - several preserved today Same powerful drive as WalthersProto(R) locos featuring: Five-pole skew-wound motor 14 to 1 gear ratio Helical-cut gears for quiet operation and easy multiple unit operation All-wheel drive and electrical pickup Machined brass flywheel Heavy die-cast metal chassis Constant and directional LED headlights 21-pin DCC plug Molded drill starter points - add correct curved grab irons to your model easily with WalthersMainline RS-2 Diesel Detail Kit (#910-260, sold separately) Correct size RP-25 metal wheels Proto MAX(TM) metal knuckle couplers