Victorinox Edge-Mag 10.5" Magnetic Knife Blade Protector is designed to keep your cutlery safe and secure. Can be cut to fit most blade sizes and shapes. Edge-Mag knife covers are manufactured with multi-poled magnets that will not magnetize your knife. Edge-Mag utilizes complex magnetic fields that alternate every 1/8-inch and cannot permanently align the poles in any magnetically receptive object.