This Dice herb and spice grinder is a hard and durable alternative to vast array of other fragile grinders. Made from hardened plastic, This light weight single compartment grinder turns even the hardest of herbs into a fluffy and manageable consistency with out the need of hand pulverization. The secret to this "Power House" grinder, the traditional pyramid teeth that interlock and glide and vibrate, manually turned, shredding the herb like you wouldn't believe possible. See the results for your self! This light weight grinder in held securely in place by a center mounted magnet. This grinder is amongst the most effective and durable on the market! grinder measures 2.5in x 2.5in diameter.