Keep all of your knives sharp with the Field Precision Knife Sharpening System. Even serrated knives can be kept sharp using the triangular Arkansas stone. Other stone grains included are diamond, coarse diamond, and fine Arkansas. Folding rod guides let you sharpen at different angles, and the vice clamp allows you to keep your knife at the right angle. Works well with pocket, kitchen, sports knives, and tools. Includes honing solution and fabric storage pouch. Three-year limited warranty.