Smart Crusher Cnc Magnetic Aluminum 3 Pc Tobacco Pollen Herb Spice Grinder in Assorted Colors ASSORTED COLORS shipped randomly ,Silver , blue and black Specially designed by highly sophisticated CNC machines Contains a special teflon O ring which makes grinding even easier with absolutely no metal shavings Two super strong neodymyum magnets are used to keep a nice and tight closure This awesome grinder has a CNC DIAMOND CUT RAZOR SHARP teeth to grind with great efficiency and ease.