The ultimate in ball surface adjustment technology, Genesis Pure Surface pads feature a revolutionary patented cloth backing laminated to flexible foam. This allows for superior transpiration of the material, which helps extend the life span of the pad and achieves an even finish quality that is beyond compare. It also improves the anti-clogging properties, helps keep the working temperature down and allows for increased dust suction for a cleaner working environment. Features + Benefits: Consistent Finish Every Time - Whether by hand or with a ball spinner, Pure Surface pads achieve a more even finish than traditional sanding discs. Superior Anti-Clogging Ability - The pads anti clogging design allows debris & liquids to easily flow through for a cleaner work environment. Use Wet or Dry, without the Heat - Use them wet or dry. The increased airflow means less heat build-up, even when used on a ball spinner. Color Coded Ease - The color coded material of each grit allows for easy pad recognition, even if the printing wears off from use.