This key can be used to open the supply crate from the Team Fortress 2 game. Apart from that, the TF2 Key can also be sold on the Steam community market to become a Steam wallet. Important to note: 1. Make sure the inventory is public so you can send a trade offer 2. Enter the "Trade Offer" link when ordering so it can be processed as quickly as possible 3. Make sure the account is not in Trade hold, so that the trade offer can be sent after the order on my items is placed If you still have questions, don't hesitate to chat via my item