Built by ACF from 1940-1953, the 70-Ton Hart Ballast Cars were formally known as Hart Selective Service Ballast Cars, due to the use of specially-designed doors which allowed the lading to be discharged one of three ways: to the center of the rails, to the center and sides of the rails, or to the side of the rails only.

FEATURES INCLUDE:

- Die-cast chassis
- Ready-to-run
- NEW! 70-ton friction-bearing trucks
- Separately-applied side-dump doors which can be positioned open or closed
- Separately-applied grab irons, coupler cut lever, train line hose, and air brake piping detail
- Fully detailed interior, including cross-bracing and side stiffeners
- AccuMate Proto-Coupler ready (coupler boxes for Proto-coupler will be included in the packaging)
- Accurate painting and printing

Six unique road numbers are available per road name except for the Data Only cars, which have no road numbers.