The three piece grinder is airtight with the help of two powerful, neodymium magnets and a nylon gasket, providing the smoothest operation available. Made up of 3 sections; open the lid for diamond shaped razor sharp shredding teeth that will easily slice through the toughest dry herb. When at the center chamber of the 3pc Space Case Scout Grinder Container Large Magnet 76mm is exposed, allowing you to see the extra deep chamber where the herbal blend is stored for use. The 3pc Space Case Scout Grinder Container Large Magnet 76mm are crafted with seamed edges. This process requires each unit to be individually machined from a single piece of aluminum which creates an invisible seam leaving the turning movement as smooth as possible.