SODIAL(R) Aluminum Herb Spice Tobacco Grinder Crusher Muller Mill Hand Crank Pollen Screen Colorful One of the highest quality grinder made from super strong aircraft grade aluminum. To make tabacco smells more fragrant, improve tobacco quality, taste more prominent, burning more smoothly; smoke more fluently, more fragrant, thicker smell. An ideal for hand-rolled and pipe off. 4 Piece Aluminum 2.5" Herb Grinder Hand Crank Razor sharp diamond teeth in grinding chamber