DMT Diamond Mini Sharp DMTF70E. This Knife Sharpener from the expert craftsmen at DMT is green with extra fine grit and a 2 3/4" x 1" sharpening surface. Don't venture outdoors without the DMT Diamond Mini Sharp Knife Sharpener. Specifications for DMT Diamond Mini Sharp: Manufacturer: DMT Handle Material: Plastic Blade Material: Plastic Features of DMT Diamond Mini Sharp Knife Sharpener: Green extra fine grit 2 3/4" x 1" sharpening surface Plastic cover snaps shut for carrying and snaps open for sharpening Includes keyring Compact and convenient Package Contents: DMT Diamond Mini Sharp DMT DMTF70E: Diamond Mini Sharp