Victorinox Forschner 49002 Knife Sharpener. For a convenient knife sharpening system that is easy on the wallet look no further than Victorinox's Individual Handheld Sharpener (49002). Razor sharp edges are achieved with the precisely angled sharpening plates. You can feel safe while sharpening thanks to a finger guard and design that requires less pressure to sharpen. The ergonomically designed grip is comfortable and can be used by righties and lefties. Dishwasher safe and durable, this knife sharpener is designed to last a lifetime, which is why Victorinox includes a lifetime warranty against any defects in material and workmanship.