Victorinox 48344 Cutlery Edge-Mag, Magnetic Knife Blade Protector Set of four universal design magnetic blade protectors--ideal for travelling chefs Includes 7-inch, 9-inch, 10-1/2-inch, and 12-1/2-inch protectors Fits most sizes and shapes and can be cut to fit most blades Manufactured with multi-poled magnets that cannot magnetize your knife Dishwasher safe at low temperatures