Five Tigers whetstones are made from high-quality diamond grit and premium sharpening materials, providing precise and fast sharpening for all types of knives. The stone is highly durable, resists wear, and its fine texture helps maintain a smooth and sharp edge for a long time. - Name: FIVE TIGER Knife Sharpener Stone 8x2x1"" - Brand: FIVE TIGER - Unit Amount: 1 unit(s) How to Preserve: Store in a cool, dry place away from direct sunlight.