Aluminium oxide abrasive. Hook & loop backing for quick fitting. For sanding wood, paint, varnish, plastic, plaster and metals. For use with all 125mm hook and loop backing pads. 4 x 60, 2 x 80, 2 x 120 and 2 x 240 Grit. Aluminium oxide abrasive. Hook & loop backing for quick fitting. For sanding wood, paint, varnish, plastic, plaster and metals. For use with all 125mm hook and loop backing pads. 4 x 60, 2 x 80, 2 x 120 and 2 x 240 Grit.