EZELAP Diamond Products 1" 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 41 1" x 6" Diamond Stone with groove for fishhooks Model Description 41SF Super Fine Grit (1200) 41F Fine Grit (600) 41M Medium Grit (400) 41C Coarse Grit (250) 41XC Extra Coarse (150)   Model 42 1" x 6" Diamond Stone on a Walnut Pedestal Model Description 42F Fine Grit (600) 42M Medium Grit (400) 42C Coarse Grit (250)   Model 46 1" x 6" Diamond Stone with a Leather Pouch with groove for fishhooks Model Description 46SF Super Fine Grit (1200) 46F Fine Grit (600) 46M Medium Grit (400) 46C Coarse Grit (250) 46XC Extra Coarse Grit (150)