Use it regularly to hone your knives, and they’ll make light work of slicing and chopping tasks. Made of high-quality stainless steel, and features durable vertical ridges. Run your knives across them, and they effectively straighten and realign the blades for drastically improved cutting performance. Comes with a protective safety hood and a handy integral hanging storage loop. Measures 25cm (10"). Wipe-clean only. With a 25 year guarantee.