DWT flap discs for metal and wood with feature an aluminium oxide (electrocorundum) coating. This material is distinguished by exclusive hardness and tenacity, and is ideal for processing materials with longstring chips, such as metal and wood. Abrasive flap discs with aluminium oxide sanding plates are suitable for working steel, cast iron and steel plates, as well as wood.
DWT flap discs for metal and wood with feature a zirconia aluminia coating. This material is an alloy made from a precise combination of zirconium dioxide and aluminium oxide. A microcrystalline structure with self-sharpening effect is obtained at a temperature of approximately 1900 °C. Zirconia alumina is an excellent material for heavy grinding of high-quality steel, VA steel and chrome-nickel steel.