Timberline 4016 by Amana BLUE 1200 GRIT DIAMOND HONEDiamond Hones on plastic handles for quick and easy handling. Thesehones are great for quick sharpening of router bits, shaper cutters,saw blades, chisels and knives. Sharpening surface is 3/4" wide by 2"long with tapered leading edge for difficult-to-reach areas. Excellentfor sharpening carbide, high speed steel (HSS) and tool steel.