Diamond abrasive EDGE to shape the burr-free edge and ensures astonishingly sharp edges in seconds</br>Tunsgten Steel Blade for sharpening the dull edge. Creates a perfect double bevel "V shaped edge for superb cutting.</br>Ceramic edge for final polish of the edge.</br></br>Product Description</br></br>The world's fastest 3-stage knife sharpener!  Produces razor-sharp?? arch-shaped edges on all quality Straight Edge knives.For both?? left and right hand use.</br><br/>http://www.amazon.com/gp/product/B0094EY658