Tungsten Carbide Blades put a quick sharp edge on dull or damaged knives. These carbide blades are precision ground on both ends so they are reversible and replaceable. Precision ground carbides provide a smoother, more consistent sharp cutting edge on your knife blade. They also sharpen your blade quicker than standard carbide blades. Replacement blades for: Smith’s Edge Pro Pull-Thru Knife Sharpener. Two blades per set.Reversible to extend life of bladesTungsten Carbide material works quickly to remove metalWill quickly put a sharp edge on even the dullest of knivesGives a smoother, more consistent sharp cutting edge than standard carbide bladesTwo blades per setReplaceable carbide bladesWARNING: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.p65warnings.ca.gov