One of the best herb grinders created by Aerospaced, this 4 piece grinder comes with a pollen catcher and scraper. It uses diamond-shaped, metal teeth to grind up the dry herbs within its chamber. Simply twist the magnetic top to pulverize your herbs with these sharp teeth. After the herbs have been ground up, they will drop through the first level into the herb chamber. This herb chamber has a built-in mesh screen that catches the herbal material. However, the screen has small pores that allow minuscule particles to fall through. These very small particles fall into the bottom chamber: the pollen catcher. This chamber comes equipped with a triangular pollen scraper, so you can round up the particulate matter.