Velcro sanding disc PRO A275- Aluminium oxide - No-Fil® coating prevents premature clogging for a longer disc service life - Fibre-reinforced latex paper backing with Velcro, is flexible and tear-resistant - With 15 suction holesWith 15 suction holes - For a fast cutting rate and a consistently high surface quality - For processing non-ferrous metals, paints, lacquer, hardwood and softwood.