Made from premium aluminum oxide paper, these self-adhesive sheets offer lasting performance and compatibility with most sanding discs! Self-adhesive backing is easy to affix to your sanding disc, and comes in your choice of 9" and 12" diameters. The 9" sheet comes in 80 or 120 grit while the 12" comes in your choice of 60, 80, 100, or 120 grit. Technical Details Made from premium aluminum oxide paper for high performance and long lasting durability Self-adhesive is easy to affix to your sanding disc Available in 9" and 12" diameters