Specification (คุณสมบัติ) : Unique design. This metal herb grinder consist with zinc alloy. It have 4 layers, the top lid have sharp and connect with second piece in strong magnet stone. The second piece equip sharp zinc material teeth and big circle filter hole to next room. The third piece is a leave piece can take it out, the third leave have fine and dense filter metal screen. The bottom part is a storage space which can store powder or when the 3 piece stay can store the grinding charge.