This system includes an anodized knurled aluminum handle and two threaded 600-grit diamond-coated sharpening rods. The smaller rod has three 2-Inch straight sections in sizes 3/32-Inch, 3/16-Inch, and 1/4-Inch. The larger rod has three straight sections in sizes 11/32-Inch, 1/2-Inch and 5/8-Inch. The larger rod also has a 6-Inch flat side. The handle and rods fit neatly in a nylon storage pouch. The Veff Sharp is effective on most serrations and does not create egg-shaped serrations as tapered sharpeners do. It works equally well on gut hook knives and seat belt cutters. It is a versatile and indispensable tool that belongs in every workshop, tool box, tackle box and hunter"s pack. It allows 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. Light to moderate pressure is all that is needed for the diamonds to do their job. On most tools to be sharpened, simply blacken the cutting edge with a black ink marking pen. Then, following the original angle of the cutting edge, make a couple of strokes with the appropriate size of the rod across the edge. If you have the correct angle, the ink will be removed evenly. Once you have sharpened the first side of the edge correctly, you will have a burr on the back or flat side of the blade edge. Remove this burr by using the flat side of the sharpener and place it almost flat on the burr side of the edge. Use light pressure and draw the sharpener across the burr until it is removed. This will leave you with a keen cutting edge.