Smiths 4in Diamond Sharpening Stone - Coarse. This keeps the sharpening surface clean and working effectively. The 4 Coarse Diamond Sharpening Stone also comes with a Micro-Tool Sharpening Pad for sharpening the tips of your knife blade and small tools a straight-line sharpening groove for fishhooks and pointed objects and a stone cover that doubles as a base when not covering the stone. It is excellent for sharpening even the hardest steel blades and works best on small to medium hunting knives tactical knives and everyday pocket knives. Features/Specifications: Interrupted surface speeds sharpening 325 Grit (COARSE) Cover doubles as base extension Straight-line sharpening groove for hooks and pointed objects Micro-Tool Sharpening Pad for tips of your knife blade and small cutting tools Lightweight and compact Specifications for Smiths 4in Diamond Sharpening Stone - Coarse: Manufacturer: Smiths Grit: 325 Color: Yellow Length: 4 in Features of Smiths 4in Diamond Sharpening Stone - Coarse: Interrupted surface speeds sharpening 325 Grit (COARSE) Cover doubles as base extension Straight-line sharpening groove for hooks and pointed objects Micro-Tool Sharpening Pad for tips of your knife blade and small cutting tools Lightweight and compact Package Contents: Smiths 4in Diamond Sharpening Stone - Coarse Smiths 50924: 4in Diamond Sharpening Stone - Coarse