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 zirconiasemi friable aluminium oxide fully synthetic resin bonded 080 or 084 mm vulcanised fibre highest material removal rate and longest lifetime sanding discs for clamping on a rubber backing pad 230 mm 22 mm 24