Sharpstone Brand 3" Inch EXTRA LARGE CNC Aluminum 4 PC Pollen Herb Spice Grinder. POLLEN SCRAPER, AND GRINDER POUCH INCLUDED! POLLEN SCRAPER, AND GRINDER POUCH INCLUDED! Specially designed by highly sophisticated CNC machines, which utilize the latest technology in processing and shaping aluminum, providing more superior grinders with practiacally a zero flaw rate! Contains a special teflon O ring which makes grinding even easier with absolutely no metal shavings guaranteed! Two super strong neodymyum magnets are used to keep a nice and tight closure. This awesome grinder has a total of SEVENTY-FOUR CNC DIAMOND CUT RAZOR SHARP teeth to grind with great efficiency and ease.