An item you can use to increase your free chances of acquiring free resources inside the support camp building. 

-You will get this item as a reward after completing specific missions in the base or participating in some events.
-There is a daily limit for using your free support chances; you can't exceed the limit even if you still have remaining chances. However, even if you reach the limit, you will not lose the remaining chances you got from using the free support item, and you can use them the next day.