Crafted from Austrian tungsten carbide, Brd Taylors Knife Sharpener Replacement Bars bring new life to your Professional Knife Sharpener (KS-500). Diamond-ground, ultrahard formulation (HRC95) comes mounted on sturdy nylon bars. Sharpening bars last up to five years with normal home use. Includes instructions. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Sharpeners.