Premium Silicon Carbide grain on a tough paper backing.Designed for fine finishing and long life.Available with Hook & Loop Backing., Strong resin over resin bond construction is resistant to heat and moisture.This special sharp and durable grain cuts fast and lasts long.Hook & Loop Fastening System: Allows for quick changes and less downtime..Backing Pads, Interface Pads and Contour Hand Pads for Paper Discs are available in Accessories.