Abracs Zirconium Flap Discs are a Premium Quality Flap Disc engineered for maximum performance stock removal, blending and finishing. The lightweight fibreglass backing absorbs vibration and makes this product incredibly strong and durable. Zirconium flap discs have a long life & are suitable for a full range of metal applications including stainless steel. Abracs Zirconium flap discs are manufactured to O.S.A. safety standards. For use on stainless steel, sheet metal, mild steel and high grade steel.