The Chef'sChoice 430 Diamond Hone Knife Sharpener is a manual knife sharpener designed specifically for serrated knives. Made of durable plastic in a sleek white color, this sharpener features a non-slip base for stability during use. With a straightforward manual operation, this product is perfect for maintaining the sharpness of your kitchen knives with ease. Proudly made in the United States, this Chef'sChoice sharpener is a convenient and reliable tool for keeping your knives in top condition.