Specification Brand : ROCKLER ItemName : 800/4000 Combination Grit Waterstone ItemPackageQuantity : 1 ItemTypeKeyword : sharpening-stones ProductDescription : Keep your valuable tools in peak condition! For preliminary sharpening where chips exist or bevel angle need to be changed, use the 250/100 waterstone. To remove smaller nicks and do a finish sharpening of woodworking chisels and other tools, the 800/4000 combination is the best choice. Finally, use the 1000/6000 waterstone for creating a polished edge. Extremely tough man made abrasive material. These stones cut faster than oilstones. Stones must be soaked in water prior to use and kept wet with water during use. Waterstones develop a slurry to speed the honing process. ProductSiteLaunchDate : 2008-06-22T00:00:00.000Z