Utopia Kitchen Double-Sided Whetstone - Knife Sharpening Stone - Multi-Colored - 600/1000 Grit DESIGN - 600/1000 Grit Double Sided Sharpening Stone. L 7"x W 2.4"X H 1.06. The fine surface prevents the cutting edge from damage when sharpening. And the sharpening will be much efficient. Slip-resistant rubber bottom mean your sharpener is easy to handle and stays in place during use. Sharpens standard and serrated edge knives. EASY TO USE -. Abrasive Material is Carbon Steel. Grade: Coarse/Fine being one side 600 grit, the other 1000 grit. Perfect for do-it-yourself projects. SAFE HANDLING - High-grade corundum ensure effective sharpening results. Utopia Kitchen Double-Sided Knife Sharpening Stone is for all types of knives, including kitchen, household, sporting and pocket knives. Fast and easy to use. Equipped with silica gel non-slip base CAUTION - Use the whole surface of stone to keep the consistency when sharpening knives. Protect the stone well and avoid it falling from the height. Sharpening result would be much better using with sharpening oil. Please put the knife sharpener and knife beyond the reach of children