The Sticky Barb (Japanese: くっつきバリSticky Barb) is a type of held item introduced in Generation IV. It damages its holder at the end of each turn, but changes holders on contact.
At the end of the turn, the Sticky Barb damages the holder by 12.5% of its maximum HP each turn. If a Pokémon with no held item hits a Pokémon holding a Sticky Barb with a contact move, including Knock Off, the Sticky Barb will transfer to the Pokémon that used the move (even if the original holder has the Sticky Hold Ability). If the transfer target has a substitute, Sticky Barb will not transfer.