I don't fish in the rain as much as I used to but on this day I lost a jig so looked for a replacement and it was raining hard enough that rain got in the box. Other jigs with black nickle sickle hooks were fine, just the Gekkabijin hooks rusted. Seen some heads on ebay but shipping costs were 5x the cost of the four pack. I'd love to find some more jig hooks if anyone has some.