EZELAP Diamond Products 2-1/2" x 11-3/8" 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 91 2-1/2" x 11-3/8" Diamond Stone Model Description 91SF Super Fine Grit (1200) 91F Fine Grit (600) 91M Medium Grit (400) 91C Coarse Grit (250) 91XC Extra Coarse (150) Model 92 2-1/2" x 11-3/8" Diamond Stone on a Walnut Pedestal Model Description 92F Fine Grit (600) 92M Medium Grit (400) 92C Coarse Grit (250) Model 96 2-1/2" x 11-3/8" Diamond Stone with a Leather Pouch Model Description 96SF Super Fine Grit (1200) 96F Fine Grit (600) 96M Medium Grit (400) 96C Coarse Grit (250) 96XC Extra Coarse Grit (150)