The Mercer 5526120 6-inch 6 Hole 120 Grit Hook and Loop Sanding Discs - 50 Pack sanding discs are ideal for sanding wood and metal surfaces that are likely to load up and clog most other regular type of abrasives discs. Heavy C-weight polyester backing combined with gold stearated aluminum oxide grain resists residue buildup. Features: * Resistant to Heat and Great Grain Adhesion * Heavy C-Weight Backing * Resin on Resin Bond * Prevents Loading * Quick Change * Gold Stearate * Fast Cutting * Long Life What"s In The Box: * The Mercer 5526120 6-inch 6 Hole 120 Grit Hook and Loop Sanding Discs - 50 Pack