This is a USA Trains 14080 G Southern Pacific Woodchip Car with Real Woodchip Load #464331

and Self-adjusting couplers allow for operation on tighter curve layouts

While they're shown as a specific scale

From the rail up

The Trainz SKU for this item is P11399751

Athearn 23438 N Union Pacific ACF 2970 Covered Hopper #219755 ProductID_11397217 This is a USA TrainsThis is an Athearn 23438 N Scale Union Pacific ACF 2970 Covered Hopper #219755. Features: Round or trough hatches, Photo etched metal roof walk, Separately applied wire grab irons and stirrup steps, Detailed outlets, Fully assembled and ready to run out of the box, Accurately painted and printed, Highly detailed, injection molded body, Screw mounted trucks, Highly detailed, injection molded body. Separate brake wheel, cylinder, valve and air reservoir