Additionally, our Light Grinding and Blending discs can often single handedly prepare surfaces for painting, where a 3 mil or greater paint thickness is being applied, without adding a final dual action sanding step. 3M™ ceramic aluminum oxide abrasive is a ceramic mineral designed using our proprietary process to enhance toughness and hardness of the grain for a higher level performance. Ceramic aluminum oxide blend is engineered to fracture frequently and surpasses aluminum oxide abrasives in both cut rate and durability. Perfect for moderate to heavy stock removal as well as finishing, ceramic abrasives are built to cut fast and handle intense heat and stress applications. Our 3M™ Roloc™ quick change discs are smaller discs that easily and quickly attach onto a Roloc™ disc pad (sold separately) so that you can conveniently change discs fast and easily to accommodate different tasks or multi step finishing processes. The Roloc™ system provides a secure attachment even for heavy duty applications, and the variety of available 3M™ Roloc™ discs allows swapping from one application to the next in seconds. Each disc is also color coded to identify its grade, making it easy to grab the grade required for different applications.