CRKT Veff Sharp Professional Knife Sharpener VEFF1 was designed by Tom Veff (the inventor of CRKT's Veff serrated edge) to be the ultimate portable multipurpose field and bench sharpener. The CRKT knife accessory includes an anodized knurled aluminum handle and two threaded 600-grit diamond-coated sharpening rods. The handle and rods fit neatly in a nylon storage pouch, included with the Veff Sharp. The Columbia River Veff Sharp 600 Grit Diamond Coated Knife Sharpener is effective on most serrations and does not create egg-shaped serrations as tapered sharpeners do, and it works equally well on gut hook knives and seat belt cutters. The knife accessory is a versatile and indispensable tool that belongs in every workshop, tool box, tackle box and hunter's pack, allowing the user to keep a keen edge on all types of cutting tools including serrated and plain edge knives, wood chisels, wood carving and lathe tools, router bits, punches, scissors and saw chain. Proper use and care will ensure a lifetime of effective use, courtesy of Tom Veff and Columbia River Knife & Tool. With a little practice, you'll find it easy to restore the edges on all of your cutting tools. And like Tom Veff, you'll get addicted to sharp with the Columbia River Knife and Tool Veff Sharp Dual Rod Knife Sharpening Tool.