Ukko's Axe Old Finnish Bronze Talisman in the shape of Thor's Hammer, or Mjöllnir. Thor's Hammer meaning grinder or crusher, is God Thor's magical weapon. The hammer is unbreakable, it always hits the target and then comes back to the owner's hand. The hammer flies through the sky in the form of a lightning. To be able to handle the hammer Thor wears a pair of iron gloves and a strength belt. The mjöllnir amulets were worn by the Norse seamen and warriors.