 Brokkr bet his head with that of Loki that his brother Eitri could make things with better craftsmanship than Skíðblaðnir or Gungnir.While Eitri used magic in a forge that was extremely hot, Brokkr worked the bellows so that the fire would not cool down nor get too hot for the magic.While making the boar Gullinbursti, a gadfly, often thought to be Loki himself, came and bit Brokkr on the hand.