Grav Labs' new grinder is one of the most modern looking and well engineered we have seen in a long time. It uses high grade CNC aluminum for the main casing and has a knurled finish on the top and bottom parts to make it easy to grip as well as improve the looks. They have then added a trio of cut-out windows in the main body which are lined with clear polycarbonate to allow you to look inside and check how much material is already prepared and see how fine it has been ground. The teeth are another modification over the normal design, both set in the top and bottom section of the cutting chamber are razor sharp and are designed to cut cleanly while crushing as little material as possible. The sifter screen is also magnetized to allow you to remove it and clean it or replace it as needed.
about the The Grav Grinder here.