D-Class Box

The D-Class Box is a Kit Box in Asphalt Nitro.
== Description ==
The description is wrong. Each D-Class Box grants 8 cards which can be D-Class Parts (at least 1), Tech or Engines. The box does not grant Parts of other classes, Fuel or boosters.
== Availability ==
The in-game help pages say that Exchange Boxes are only available through the Exchange system, but as an exception, the D-Class Box is offered for during a "Special promotion" at the beginning of the game. The offer seems to be one-time only.