LotFancy Professional Grade Purple Sanding Discs are available in grades P40 - P800, ideal for featheredging, fine featheredging, prepping before blending, final step before priming, putty and primer sanding.<br> Sand Paper is great for automotive refinishing, wood and composite processing, marine industry, and vehicle manufacturing.<br> Widely used on metal and non-ferrous metal, hard wood, rubber, leather, plastic, stone, glass, paint stripping and removal, lacquers, body filler, primer, soft resinous woods, copper alloys, brass, bronze, veneer, and more.<br>