Description Norton A975 Pro Plus self-grip sanding discs have a Norton SG ceramic grain blended with premium heat-treated aluminium oxide abrasive for higher and faster cut rate with uniform scratch pattern. These are designed for the most demanding sanding applications on primed and painted parts, composites, marine gel coat, non-ferrous metals and ceramic coating. Benefits: Norton SG ceramic grain blended with premium heat-treated aluminium oxide abrasive for higher and faster cut rate with uniform scratch pattern. Fibre reinforced latex paper is flexible yet tear resistant. Reinforced B-weight latex paper provides 50-60% better tear resistance and flexibility. Pro Plus has the most aggressive yet cool cut with excellent wear resistance, lasting up to twice as long as conventional discs. Application: To be used on 150mm self-grip back-up pad on orbital sanders. Used for sanding applications including primed and painted parts, composites, non-ferrous metals and ceramic coating.