HO Scale brass diesel locomotive set from Challenger Imports, featuring Chicago Burlington & Quincy E-5A and E-5B units manufactured in Korea by Samhongsa. This premium brass model represents the classic streamlined passenger diesels used by the Burlington Route during the golden age of passenger service in the 1940s. The EMD E-5 was among the most elegant and successful passenger diesels ever built, with their distinctive bulldog nose and sleek streamlining.

The set features authentic brass construction with fine scale detailing including proper window arrangements, roof details, and underframe equipment typical of prototype E-units. These locomotives were the backbone of CB&Q's premier passenger trains including the famous Zephyr fleet, providing reliable high-speed service across the Burlington system.