Q SILVER MINI DA SANDING DISC 77mm Box 100 Q. Silver is an abrasive with optimal aggressivity to achieve fast and efficient stock removal. The product possesses high heat endurance and is tough in down-to-metal sanding operations, for example in automotive lacquer sanding. The performance in sanding of hard wood and composites is also extremely good. The backing consists of a flexible and strong impregnated latex paper.