These 4-piece Hemper branded grinders are lightweight, durable, and efficient!
While 2 and 3 piece grinders get the job done, 4 piece grinders allow you to make the most of all of your flowers and waste nothing.
While they feature relatively the same design: two pieces on top to grind, followed by a screen and kief catch. Kief or pollen is essentially the super-potent piece of your herb called "trichomes". The kief then collects in the kief catch, so you can sprinkle it onto a bowl or bong.