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.