Rocky Helmet

“When the holder is hit by a contact move, the attacker takes damage equal to 1/6 of its max HP.”

“An item to be held by a Pokémon. This helmet damages any attacker that makes direct contact with the holder.”

“An item to be held by a Pokémon. If the holder is hit, the attacker will also be damaged upon contact.”

“If the holder of this item takes damage, the attacker will also be damaged upon contact.”