In 1982/1983, eight VOCX wagons were modified for the carriage of coil steel rolls. The coil steel rolls were transported vertically, instead of by cradle.
The class was numbered 1 to 8.
In 1987 the clas was relettered to VCVX, same numbers.
For NRC traffic, wagons 1 - 4, 7, 8 were reclassed to RCVX in 1994.
Wagons 5 and 6 were reclassed to RKCX in 1995.