Con-Dri diamond polishing pads come in 4-, 5-, and 7-in. diameters and are designed for dry polishing applications. High-quality, high-density diamonds are embedded in a white resin matrix, to avoid bleeding color on concrete surfaces, that erodes away as diamond surfaces wear out. They are durable, very flexible, and long lasting, and because dry pads generate more heat than wet pats, the finer grit sizes produce more brilliant shines. The pads are produced only for polishing concrete. Concrete Countertop Specialties. 866-902-7311.