Master Key

A  is used to unlock a single Lock Box. Lock Boxes can be found during gameplay, either from completing missions or as a drop from enemies. They may also be purchased from the Dilithium Store, the Zen Store, or the Exchange.

Master Keys can be purchased from the Zen Store for 125 for one, 1125 for 10, or 2250 for the Key Ring Bundle which includes 20.

Used to open any of the Lock Boxes below, including:
 * Cardassian Lock Box - Gold
 * Ferengi Lock Box - Gold

As well as:
 * Mystery Package - Lock Box