The Large Aluminum 4 Piece Herb Grinder is an upgraded version of the classic grinder which includes a strong magnetized lid for user convenience. Measuring in at 2.25-inches, this grinder is guaranteed to fit into any user’s palm comfortably. A strong magnet holds the lid tightly in place, while the other 3 compartments are closed by twisting. Included with this grinder is a stainless steel screen chamber to separate herbs from fine pollen and a pollen catcher to provide a mess-free storage for the loose pollen. The diamond-like sharp teeth of this piece produce an ideal grind for your favorite herbs with just a few simple and easy twists.