Jewelstik K123 10-Inch Three-Sided Diamond Knife Sharpener, Green Jewelstik K123 provides the luxury of having three different sharpeners in you hand at once Our three sided diamond sharpeners are unique to Hewlett Mfg, You won?t find another one like it The best care for your cutlery is by using a diamond sharpener, Don?t be fooled by the convenience of a pull-through; this will only tear your knife and leave it looking like an old serrated steak knife Clean with soap and water and wipe with a lint-free cloth Completely made in the USA