3M's Stikit Sanding Discs are designed for power sanding. Each disc has a Stikit attachment that can be easily attached to and used on a dual action orbital sander. Having a clean, smooth finished surface is crucial to a proper adhesion of things like paint and Bondo. 3M delivers these quality discs to help get the job done which are available in a 6" diameter and various grit ratings for your specific application needs.