Cold Steel Stylus Knife Sharpener - The Stylus is a retractable knife sharpener in a durable ABS plastic case. It is specifically designed for sharpening serrated knives but can also be used on plain-edged knives. The sharpener has a 600-grit surface and is perfect for providing a good serviceable edge on a wide variety of blades. Great for serrated blades, plain edged blades, hooks, and home and garden tools. Features 600 Grit for fine sharpening; Retractable; Compact design with pocket clip; Durable lightweight ABS plastic housing;