These cars were built by U.S. Railway Equipment Company in 1972 and 1973 primarily for the Penn Central under lease agreement. Western Pacific also leased a group of cars.

The body and underframe are injection molded plastic, with etched brass end platforms. Intricate and accurate detail is present throughout. The model rides at the prototypically-correct height above the rails, on ASF 70-ton Ride Control roller-bearing trucks fitted with low-profile metal wheelsets and Keystone cushioned underframe. Simulated cushioned-underframe coupler pockets are integrated into the underframe. The model is equipped with Micro-Trains compatible knuckle couplers.

Operation of this model over curved trackage of less than 10-inch radius is not recommended.

Conrail

Conrail inherited the Penn Central fleet of X72 and X72A equipment. Painted Tuscan red with black and white printing. Made in China.

Class X72
Serviced: 10/79

Conrail

Conrail inherited the Penn Central fleet of X72 and X72A equipment. Painted Tuscan red with black and white printing. Made in China.

Class X72
Serviced: 7/78

Conrail

Conrail inherited the Penn Central fleet of X72 and X72A equipment. Painted Tuscan red with black and white printing. Made in China.

Class X72
Serviced: 6/80

Canadian National

Canadian National purchased surplus cars from Conrail in the late 1990s. Painted freight car red with black and white printing. Made in China.

Class X72
Serviced: 7/98

Canadian National

Canadian National purchased surplus cars from Conrail in the late 1990s. Painted freight car red with black and white printing. Made in China.

Class X72
Serviced: 1/99