Gold is an all-around 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 coatings are designed to prevent clogging and pill forming. These hook and loop discs work on a wide variety of orbital sanders. The sanding discs are available in 5" 5 hole, 5" 8 hole and 6" 6 hole sizes.