This powerhouse herb grinder features a huge built in storage compartment perfect for holding whole or ground up herbs. Dozens of super sharp tooth blades tear and shred even tough herbs in to a smooth, fluffy texture, perfect for rolling. High quality, potent pollen dust falls threw the grinder compartments mesh floor; automatically transferring valuable and desirable pollen in to the huge storage compartment. In essence what ever herb you are grinding at the time subsequently "seasons" your stored herbs. This grinder measures 1.5".