Accusharp Sturdy Mount AS4. This Knife Sharpener from the devoted craftsmen at AccuSharp is a tungsten carbide sharpener that will not rust can be cleaned in dishwasher and will securely mount to any drillable surface. Don't you dare buy a knife without the Accusharp Sturdy Mount. Specifications for Accusharp Sturdy Mount Knife Sharpener: Manufacturer: AccuSharp Blade Material: Tungsten Features of Accusharp Sturdy Mount Knife Sharpener: Tungsten carbide sharpener will not rust and can be cleaned in dishwasher Will securely mount to any drillable surface Hang packaged Package Contents: Accusharp Sturdy Mount Accusharp AS4: Sturdy Mount