The Mercer Culinary M15957 is a versatile sharpening stone designed for precision and efficiency. Measuring 4-7/8" x 2-1/2" x 1-1/4", this two-sided diamond plate features 220 grit on one side for coarse sharpening and 360 grit on the other for finer honing. Its unique mouse-shaped design allows for easy handling and maneuverability, while the integral spirit level ensures a stable and accurate sharpening angle. Ideal for maintaining the sharpness of your knives, this flattening stone is a must-have for any culinary enthusiast.