A box containing Dungeon Ticket, which is available for 3 hours.

Rental Item
Free Dungeon Entry Ticket.
It seem you can directly go to dungeon if your Level meet the requirement.
Air Fortress Invasion - Level(145 or higher)

This item is not refundable.

[iRO Description]
A box containing a Sky Fortress Ticket that lasts for 3 hours.
Account Bound

Type: Consumable
Class: Item Giver