Save your fingers from those glass cuts that you get while pressing against the grinder bit! The Grinder Cookie will save the day. Its innovative shape positions and holds glass during grinding for steady pressure saving wear and tear on your grinder bit. Comfortable grip reduces hand fatigue and keeps your fingers safely away from the grinder bit surface, and free of the sharp glass edge. Works with any style glass grinder. The cookie is 2″ in diameter and feels comfortable in any size hand.