United Abrasives® Sait 60 Grit Aluminum Oxide Pressure Sensitive Adhesive Disc has 16" Dia and is featured with a closed coat structure. Disc is specially developed with X-weight Egyptian cotton cloth backing making it ideal for ferrous and/or non-ferrous metals like iron, steel, aluminum, copper, stainless steel and high tensile steel. Disc including hot melt adhesive back permits for quick change and less downtime. It also features strong resin over resin bond construction that is resistant to heat and moisture, sold as 10 per pack.