Oilstones A comprehensive range of bench stones and sharpening stones to cover a wide variety of sharpening and honing applications. Most of the shapes and sizes are available in fine, medium and coarse grades. Available in aluminium oxide or silicon carbide, all stones can be used wet or dry to produce sharp cutting edges or to remove burrs. Aluminium Oxide: Man-made abrasive which is extremely tough enabling high speed penetration of high tensile materials without causing excessive fracturing. This resistance to fracturing makes it a versatile material suitable for general sharpening and honing applications. Silicon Carbide: Man-made abrasive with very hard, sharp particles. This makes it ideal for non-ferrous metals, hard surfaces, alloys and cemented carbides. Also used on stone, marble, glass and plastics. A superior abrasive that is able to penetrate and cut quickly with only light pressure being applied. Single Grit Silicon Carbide For workshop use. Ideal for sharpening chisels, plain iron and virtually any metallic implements.