IDeggtaidea 8000 Grit 7-inch Professional Knife Sharpening Stone /Single Whetstone (T0913w, White) 8000 Grit is suitable for fine sharpening. Top grade corundum construction of the stone makes your knife sharp effectively. Equipped with a silica gel non-slip base for safety sharpening. Widely used in a variety of knives and tools including kitchen knife, pocket knife, woodworking tool and garden tools. Cannot be used for ceramic knife, scissors and serrated knife.