This 4 chamber grinder is not your average grinder. The Grynder features micro rounded teeth that make grinding your flower effortless and prevent flower from caking up inside. The micro teeth, added to the large flower chamber and Neodymium Magnets allows you to place "full sized herbs" in the Grynder delivering softer fluffier herbs. The silky smooth threading offers ease of assembly/disassembly. Everything you need to effortlessly grind your flower.