This grinder is a high quality acrylic beast. It tears up tobacco better than some of our aluminum grinders. The teeth are precision crafted for the sharpest cut. Intelligent pyramid designed teeth, ensures the ease of cutting tobacco. Gripped edges means you wont lose your grip trying to grind. Finally, each side is cup shaped, which means you can use it to hold your tobacco, enabling you to be ready for the next bowl. Please note, items are in assorted colors and you will get assorted colors on purchase.