The WZ10 and WZ19 are modern Chinese scout / attack helicopters with a similar role to the American Apache or Cobra types. They also can be used from ships with appropiate decks and hangars.
This model consists of a sprue with 1/1800 scale models of the WZ10 and WZ19. 4 of each type.
Wikipedia has more information about the originals:
WZ-10 and
WZ-19