第一精工は大阪市東成区にある「これがないと釣りができないわけではないがあればスマートな釣具」のメーカーです。

  • The unit “go” applies Omori (fishing sinkers). One go (equal to one monme, the Japanese unit of mass) is equal to 3.75 grams
    A 10-go Omori, for example, weighs 36.5 grams.
    Take tolerances into consideration because they are products made of lead.