The Ultra-Tek Blade Sharpener is the easiest way to keep any Kershaw blade sharp. The Ultra-Tek is a compact sharpening steel, for quick and easy blade touch up, anywhere, anytime. The Ultra-Tek handle is made of anodized aircraft aluminum and features a knurled pattern for strong gripping power. Stored inside the handle is a 600-grit, diamond-coated oval shaft, perfect for restoring a dull edge. Simply unscrew the shaft from the handle interior, turn it around, and screw it on to the other end of the handle. Now the Ultra-Tek is a comfortable 9-in. length, ideal for sharpening and realigning the edge of any Kershaw blade. To sharpen, hold the blade edge against the diamond-coated shaft at about a 20-degree angle and swipe the blade along the sharpening shaft. Do this an even number of times on both sides of the blade. It's a good idea to keep the Ultra-Tek close at hand for any Kershaw blade touch-ups. The Ultra-Tek is a handy, portable knife sharpener requiring no water or oil.