What does the insect head do in Stardew Valley?

What does the insect head do in Stardew Valley? Insect Head is a level 4 sword. It deals 10-20 Damage and gives a +2 Speed as stats. You can get it as a reward from Gil when you have killed 125 Cave Insects in the mines.

Insect Head is a level 4 sword. It deals 10-20 Damage and gives a +2 Speed as stats. You can get it as a reward from Gil when you have killed 125 Cave Insects in the mines.