Do you need a robust and durable cup wheel for grinding, smoothing and polishing stone and concrete surfaces? The combination of high-quality abrasive grains and a strong bonding agent gives the PRO Stone the necessary strength for optimum results. The PRO Stone is a durable cup wheel for stonemasons who need to grind, smooth and polish stone and concrete. It consists of a combination of high-quality abrasive grains and a robust synthetic resin bond for high strength and durability. For optimum results, use it for coarse grinding with your bench grinder at a maximum speed of 8500 rpm.