AccuSharp Tri-Stone Knife Sharpening System a simple and effective way to sharpen and hone any straight-edge blade. Featuring three alumina-oxide stones in coarse, medium, and fine grits, this system ensures your knives achieve a sharp, precise edge. The rubber-grip base provides extra durability and safety by preventing slipping during use, while the base can also be mounted to most countertops for added stability. An included angle guide helps maintain a consistent sharpening angle, making it easier to achieve professional results every time. Model Number: