Suitable for fine and coarse sanding, material removal, deburring and de-rusting on stainless steel, steel, cast iron and sheet steel, Particularly suitable for use in the automotive industry. Fibre sanding disc with zirconia/semi-friable aluminium oxide, fully synthetic resin bonded, 0.80 or 0.84mm vulcanised fibre. Highest material removal rate and longest lifetime Sanding discs for clamping on a rubber backing pad.