Knife Blade Sharpener Now Your Knife Blades Will Last Twenty Times Longer Patented saddle holds the blade at the exact sharpening angle for a razor-sharp edge in less than 10 seconds. Pays for itself many times over. Arkansas whetstone sharpening block provides premium sharpening ability at reasonable cost. For use with knife handles no. 1, 2, 5, 6, and Soft Grip. Sharpens nos. 11, 16, 2, and 24 blades. Color may vary.