The Victorinox Swiss Army 4.3391.7 is a versatile 3-way sharpening system designed to keep your knives in optimal condition. Measuring 11-1/2 inches, this system features three sharpening options to accommodate various blade types and conditions. It includes a pint of honing oil to enhance the sharpening process and maintain blade integrity. Ideal for both home cooks and professional chefs, this bulk-packaged sharpening system ensures your knives are always ready for precision cutting and slicing.