Aluminium oxide abrasive. Hook and loop backing for quick fitting. For sanding wood, paint, varnish, plastic, plaster and metals. For use with all 150mm hook and loop backing pads. 4 x 60, 2 x 80, 2 x 120 and 2 x 240 Grit. Aluminium oxide abrasive. Hook and loop backing for quick fitting. For sanding wood, paint, varnish, plastic, plaster and metals. For use with all 150mm hook and loop backing pads. 4 x 60, 2 x 80, 2 x 120 and 2 x 240 Grit.