The double-sided 400 and 1000-grit Knife Sharpening Stone by Whetstone enables you to sharpen and polish your kitchen cutlery, remove chips from hunting or pocket knives, and restore the cutting edge of dull blades and razors safely and easily. You can even use this whetstone knife sharpener to keep your gardening tools, axes, and hatchets clean, honed, and ready for use. Made with durable silicon carbide, this sharpening stone for knives and tools requires only water for use, no oil is needed, and it will last for years to come.