Extra Speed (ジェットスクリュー Jettosukuryū?, lit. "Jet Screw") is an item in Tails Adventure.
Location[]
The Extra Speed can be found in Green Island in a section only accessible by using the Remote Robot.
Functionality[]
The Extra Speed is an item that can be equipped to the Sea Fox. In order to use the Extra Speed, the player must hold 
. The player let go of and press 
to make the Sea Fox jump higher.