Lansky Sharpeners Extra Coarse Hone. The Lansky Extra Coarse Hone lets you bevel extremely dull and deteriorated cutting edges and get them back into high-performance condition. Specifications for Lansky Extra Course Hone Knife Sharpener: Manufacturer: Lansky Sharpeners Blade Material: Steel Features of Lansky Extra Coarse Replacement Hone: Works with the Lansky Universal System Extra course grit for heavy-duty sharpening Package Contents: Lansky Sharpeners Hone Knife Sharpeners Lansky Sharpeners S0070: Extra Coarse Hone