The 4-in-1 longzon Knife Sharpener is a manual sharpener made of stainless steel in a sleek gray color. It is designed to sharpen knives in four stages, ensuring a precise and sharp edge. The brand, Knife, is known for producing high-quality kitchen tools and gadgets, making this sharpener a reliable option for keeping your knives in top condition. Perfect for use in homes, dining areas, or bars, this sharpener is a convenient and essential addition to any kitchen.