UNIQUE MAGNETIC LOCKING FUNCTION | The ONGROK 2 Piece Grinder uses a neodymium magnet which keeps the lid securely in place, so it's easy to open and access your herbs.THE PERFECT GRIND | This metal herb crusher is crafted out of solid, aircraft grade aluminum. Inside of the aesthetic finish, this grinder uses 33 triangular shaped teeth, to provide a medium-to-fine grind, every time. This is a reliable spice and herb grinder that you can count on.USE OUR SMALL HUMIDITY PACKS FOR LONGER TERM STORAGE | This herb and spice grinder has a diameter of 63mm, making a good size to be portable, and large enough to fit a small/mini humidity pack in the bottom chamber for long term storage.DISCREET AND SLEEK | Designed with discretion in mind, the sleek, nondescript design won't look out of place in a home or professional office environment.RISK-FREE GUARANTEE | At ONGROK, our goal is to "ENHANCE YOUR EXPERIENCE", by bringing you the best service and products possible. If you're ever dissatisfied, reach out to us online, and we'll be certain to make things right!