The Cosmic Case 2 Stage Aluminum Grinder is the only surgically clean, high quality aluminum grinder on the market. These are the most premium grinders available; they are designed and engineered for perfection. The diamond sharp razor cuts fit perfectly between each other to grind up your herbs with easy. Spin the grinder in one direction to grind your herbs and turn it in the opposite direction to clear the grinder and deposit the grinded herbs into the screen compartment. These feature a strong magnetic grip to keep the grinder closed. Grinding is a breeze, bringing literally zero resistance because of the razor sharp cuts. Try this 2" grinder today, you will not be disappointed!