This set includes 4 Victorinox Edge-Mag magnetic blade protectors that are functional, easy to use, and do a perfect job in protecting your favorite knives. The set includes a 7", 9", 10.25", and a 12.5" protector (18cm, 23cm, 27cm, 32cm). The Edge-Mag knife protectors feature an universal design that fits most knife shapes and designs. The blade protectors are hygienic and are top rack dishwasher safe. The Victorinox blade protectors are designed to not magnetize your knives. This ensures both safety and convenience.