The EdgeLogix Diamond Steel 12" Knife Sharpener 600 Grit (2601) is unlike traditional chromium and ceramic steels—this steel will actually sharpen your knife. It has a coating of ultra-fine, 600 grit diamonds that will gently sharpen your knife as you hone it, making for extra sharp blades every time. Diamonds are among the world's hardest substances available, and their sharpening quickly and easily provides long-lasting cutting edges. The 12" Diamond Steel has an oval shape for more efficient performance, and a non-slip, sanitary plastic handle.