The Kai Corporation Japan Diamond Sharpener Stick Ap0540 is the perfect tool for sharpening your knives and tools. This highly durable sharpener is crafted with premium diamond embedded in a sturdy stainless steel handle, making it perfect for both professional and home chefs. Its slim profile and lightweight design make it easy to store and use, and its double-sided design provides a coarse and fine side for sharpening any blade. The Kai Corporation Japan Diamond Sharpener Stick Ap0540 is the ultimate in sharpening technology and will keep your knives and tools sharper for longer.