Honing in the blade of your knives is an important step in the overall care of your blade. The Mercer three step sharpening system is a great way to ensure that your blades are living the longest life possible. The three way system includes a medium and coarse Siliconee carbide stone, and a fine aluminum oxide stone. The stone also comes with angle guides to help keep the blade at the correct angle. The sharpener includes a case for the steel, and one bottle of oil to keep the stone clean. - Fine, Medium, and Coarse Stones - Case Included - Oil Included - Stone Length 11-1/2 in - Stone Width 2-1/2 in - Stone Height 1/2 in - Sold Per Each