The Fein zirconium sanding sheets deliver high sanding performance on extremely hard surfaces, including varnish such as parquet lacquer and metal. Their durable paper backing features tough synthetic resin bonding and a high-quality zirconium corundum abrasive coating, making them suitable for demanding floor covering and surface preparation work. The perforated sheets feature hook and loop fastening and are designed for use with a perforated sanding pad and dust extraction.