Smith's specially formulated Honing Solution is nonpetroleum based and features built-in stone cleaning agents and rust/corrosion inhibitors. It can be used on all stones and is excellent for lubricating your Arkansas or Diamond Stone when sharpening. Never use an Arkansas Stone without some kind of lubricant, or you will clog the pores and cause it not to sharpen properly. Diamond Stones can be used dry, but we recommend that you use a lubricant for better performance. HONING SOLUTION Features built-in stone cleaning agents and rust corrosion inhibitors. PREVENTS CLOGGING The built-in cleaning agents help prevent metal chips from bonding. VERSATILE USE Smiths formula is non-petroleum-based so it can be used on all sharpening stones. 4 OZ Our solution comes in a 4oz flip-top bottle for easy use and storage. USE - For best results, make sure the surface of your sharpening stone is fully lubricated. For additional information on this product, please see the Product Documents section for all downloadable user manuals, installation guides, brochures and warranty statements. Looking for more information on knife sharpeners? Check out our guide on how to use a knife sharpener in the product documents section.