The Staysharp Multi-Purpose Utility Knife is a well-rounded knife that can slice through a hearty, layered deli sandwich, cleanly and effortlessly. Its great for quartering club sandwiches, halving burgers, and slicing bagels. Then use the reverse edge of the blade to spread on the mustard or mayo with ease. Thanks to the clever self-sharpening system of Staysharp you can ensure no more blunt knives. Simply insert and withdraw the knife from the scabbard for a sharp knife every time. Like all Wiltshire knives, its made from superior quality stainless steel so its rust-resistant. So for all sandwiches great or small (and every spread in between), its the perfect accessory for lunch (and midnight snack) fans. Patented 2 stage, self-sharpening system Improved cutting performance Slim design scabbard, takes less space Ergonomic, triple rivet handle for comfort, control and durability 10 year guarantee Usage and Care Let's face it. Dishwashers may be a godsend for everything else, but not your knives because detergent can cause corrosion and blunt your knives. It is best to hand wash with a soft cloth and dry immediately. Remove stains with a mild, non-abrasive cleaner and wash well before use. Always keep your Staysharp knife inside its scabbard.