<p>to create abrasive slurry for effective sharpening with less pressure than an oilstone requires</p> <p>Combination stone has 4000 grit on one face for maintaining and refining, and 8000 grit on the opposite face for polishing steel cutting edges</p> <p>Cleans up easily with Water as lubricant instead of oil</p> <p>Blue plastic hinged box with no-slip can be used as holder for the stone during sharpening</p> <p>The Japanese-style 4000\/8000-grit combination creates an abrasive slurry for effective sharpening, with 4000 grit on one face for maintaining and refining a , and 8000 grit on the opposite face for polishing cutting edges; </p> <p>This 18*6*3cm (H x W x D) stone, suitable for bench use, cleans up easily with Water, and comes encased in a blue plastic hinged box. </p> <p>The removable box lid, with no-slip , acts as a sharpening station to hold the in place during bench use.</p> <p>Sharpening stones, or whetstones, are abrasive surfaces used to sharpen and hone the edges of steel cutting implements such as chisels, knives, scissors, hand scrapers, and plane blades. </p> <p>Sharpening is the process of creating or re-establishing a by grinding portions of the metal to adjust the angle of the edge and reform the shape. </p> <p>Package Contents: 1 x Sharpening stone</p> <p>Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>