The Mercer Culinary M15974 is a premium maintenance sharpening stone designed for optimal knife care. Measuring 7-7/8" x 2-3/4" x 1", this sharpening stone features a combination of 1000 and 3000 grit, allowing for both sharpening and honing of blades. Crafted from premium grade corundum, it ensures durability and effective sharpening performance. The included silicone base holder provides stability during use, enhancing safety and precision. Ideal for both professional chefs and home cooks, this sharpening stone helps maintain the sharpness and longevity of your knives.