Sharpstone Brand 3.5" Inch EXTRA EXTRA LARGE CNC Aluminum 4 PC Pollen Herb Spice Grinder. POLLEN SCRAPER, AND GRINDER POUCH INCLUDED! POLLEN SCRAPER, AND GRINDER POUCH INCLUDED! Designed by sophisticated CNC machines, which utilize the latest technology in processing aluminum! Contains a teflon O ring making grinding even easier with absolutely no metal shavings guaranteed! Two super strong neodymyum magnets are used to keep a nice and tight closure. This grinder has SEVENTY-FOUR CNC RAZOR SHARP teeth!