Satin Finish Buff, Fine, 4.5 Inches By 3/4 Inch | BUF-714.07 Ideal for giving gold, silver and other non-ferrous metals a satin finish Made of aluminum oxide and treated with a special resin 1/4 inch hole for tapered spindles Red buff, fine 4 inches by 3/4 inch (100 millimeters by 20 millimeters)