Treasure Key

The Treasure Key is a single-use tool item, available through trading or purchase at the Dota 2 Store. Each key can be used once and will open one selected Treasure Chest.

Opens
The Treasure Key can open the following chests:

History
Unique individual keys were once bought from the store to open chests found from drops. After the June 06, 2014 Patch, unique keys were removed and chests were made openable by default after purchase from the store.