Hello.
This is the Gravity Ragnarok Online: Zero Operations Team.
After today's regular maintenance, it has been confirmed that the 
Speed Potion included in the 
Special Toolbox is being obtained as the [Event] Speed Potion.
Regarding this item, during the 9/18 regular maintenance, we will check the acquired item details, collectively retrieve the quantity obtained from the Special Toolbox, and reissue it as a tradeable item.
We apologize for the inconvenience caused to your gameplay due to this issue, and we will continue to make ongoing efforts to prevent similar inconveniences in the future.
Thank You.