This pack of 10 premium quality aluminium oxide 150mm (40 grit) sanding discs are resin bonded to provide improved grain adhesion, anti-static qualities and long-lasting high performance. The heavy-duty E-Weight backing paper makes the sanding disc more durable – able to withstand the toughest jobs. The hook and loop backing offers decent adhesion to facilitate the fast changing of sanding discs. The six pre-punched 8mm holes improve the dust extraction during sanding. Ideal for sanding and finishing wood, metal, aluminium alloy, painted surfaces, plastic and fillers. Compatible with all 150mm random orbital sanders with hook and loop backing pads.