Premium aluminum oxide mineral is durable, cuts fast, and performs well on many surfaces Strong, C-weight paper backing supports aggressive sanding with extra durability compared to lighter weight paper backings Open coat construction and load-resistant coating prevent premature loading of the disc surface to maximize cut and extend abrasive life 3M Hookit discs are easy to change and reuse, maximizing sanding utility for the life of the disc Hook-and-loop feature provides reliable attachment For industrial/occupational use only. Not for consumer sale or use