EZELAP Diamond Products 2" x 6" Diamond Stones These diamond stones are perfect for hunting and fishing knives, woodworking tools, exacto blades, axes and industrial use. No oil or water is necessary, the surface will remain true and flat. Model 61 2" x 6" Diamond Stone Model Description 61SF Super Fine Grit (1200) 61F Fine Grit (600) 61M Medium Grit (400) 61C Coarse Grit (250) 61XC Extra Coarse (150) Model 62 2" x 6" Diamond Stone on a Walnut Pedestal Model Description 62F Fine Grit (600) 62M Medium Grit (400) 62C Coarse Grit (250) Model 66 2" x 6" Diamond Stone with a Leather Pouch Model Description 66SF Super Fine Grit (1200) 66F Fine Grit (600) 66M Medium Grit (400) 66C Coarse Grit (250) 66XC Extra Coarse Grit (150)