Check the listing for details. Starcke Premium 5 Inch Heavy Duty PSA Sanding Discs Silicon Carbide. Condition: New. Listed at 15.12 USD. * 5 Inch Heavy Duty ' 25/50/100 Pack ' Grit: 60/80/120/220/320/400/600/800 * Premium black Silicon Carbide grain on heavy duty E-weight paper backing for a precise and uniform finish * PSA/adhesive backed tabbed sanding disc with easy release liner for use with backup pad * Exceptional results in dry sanding finishing applications for stone, metal, autobody, paint, primer, plastics, marine, composites and cultured marble * Professional grade, German quality, stocked & shipped from the US Starcke is family owned with over 100 years of experience in manufacturing abrasives 5" heavy duty E weight paper sanding discs. Super sharp and fast cutting Silicon Carbide abrasive. Individually cut discs with Pressure Sensitive Adhesive (PSA) - each disc includes a protective release liner that provides for maximum adhesion and prevents grit, dust and air from degrading the disc's backing. Used for dry sanding on natural stone, plastic, fiberglass and concrete. High quality German industrial abrasives factory direct.