Herb grinders shred your herb into a fine consistency so it can be easily loaded into a bowl or vaporizer. This is essential if you want to make sure it gets packed into a small pipe like a one-hitter or if you want to carry it around in a dugout! Many grinders feature "pollen screens" that collect the smallest particles from your herb. Once you've collected this, you can use a pollen press to make a solid disc of pollen that can then be enjoyed in your favorite piece!