Satin Finish Buff, Ultra Fine, 4.5 Inches By 3/4 Inch | BUF-754.07 Ideal for giving gold, silver and other non-ferrous metals a satin finish Incorporated with silicon carbide and a special resin 1/4 inch hole for tapered spindles Gray buff, ultra fine 4 inches by 3/4 inch (100 millimeters by 20 millimeters)