1.herb grinder 2. 4 piece Grinder: made of CNC technique from a wohle part of Aluminium. 3. many colors 4.high quality ... products, Tobacco Grinder - Space Case grinder, aluminium grinder. 4 piece, 2 piece, 3 piece, 5 piece grinder1. The metal Grinder is made of CNC technique ... of Aluminum. 2. Sizes: 2 parts in diameter of 30mm.3. Color: silver, grey, red, green, blue, etc.4. Customized logo ...