The Mirka 23615220 is a Box of 50 5-Inch 220-Grit Dustless Hook & Loop Sanding Discs. These Mirka discs are made of gold a durable product very well suited for sanding at high speeds. Gold is an all-round sanding material that can be used for many purposes. In order to achieve an optimal sanding result, the semi-open grit binding and special stearate coating are designed to prevent clogging and pill forming. Features: Durable aluminum oxide 220 grit High-strength resin bond system Increased life, made with anti-load stearate Hook-and-loop design; can also be used with a standard pad with no punched holes Affordable at 50 per box What's In the Box: Mirka 23615220 5-Inch 220-Grit Dustless Hook & Loop Sanding Disc 50-Pack