These cars were originally sold by MDC/Roundhouse. Athearn acquired them later on. They are available in 4 and 12 car sets (as well as singly). Eastern Seaboard Models sells these cars in custom paint schemes not available directly from the manufacturer. Starting in 2019, Athearn began marketing these cars as "GATC 20,0000 Gallon Acid Tank Cars" (which is probably still wrong since the concensus is that they aren't accurate models of any particular prototype). But anyway, here's what Athearn has to say about them -
GATX’s North American tank car fleet consists of more than 59,000 cars with nearly 70 different types serving the chemical, petroleum, transportation, agriculture, food, mineral, and plastics markets. Major car groupings include general service and high pressure, and cars used to carry various types of acids and other specialty products. Customer logos can occassionally be found on GATX leased cars. These cars can be found interchanged all over North America on all major and short line railroads.
Pre-2019 Athearn Features -
- Fully assembled and ready to operate
- Based on Model Die Casting tooling
- Screw mounted trucks for accurate tracking
- Truck mounted Accumate knuckle couplers
- Plastic wheels
Post-2019 Athearn Features -
- All models are representative of prototypical paint schemes
- 70-ton or 100-ton Roller Bearing trucks w/ 36” wheels per prototype
- Operates on all popular brands of track
- Fully-assembled and ready to run out of the box
- Highly-detailed, injection-molded body
- Separately applied brake wheel and ladders
- Machined metal wheels
- Weighted for trouble free operation
- Body mounted McHenry operating scale knuckle couplers
- Window packaging for easy viewing plus interior plastic blister safely holds the model for convenient storage
- Replacement parts available
- Minimum radius: 10”
"Primed For Grime" Features -
- Duplicated look and feel of “In Service” equipment; “Tattered and Torn” just like the real thing
- Faded base colors matched to the prototype
- Patches applied and shaped per road number matching each corresponding side to the prototype
- Perfect starting point for adding grime and rust