Scotch-Brite™ non-woven fibers provide cool, uniform wear and the open-web construction resists loading. Designed for our 3M™ Roloc™ quick change attachment system, the no-hole center on some versions allows use of more of the disc surface as well as quick and easy disc change-out. These attributes combine to provide consistent finishing over the life of the disc.The Scotch-Brite™ Roloc High Strength Disc contains aluminum oxide abrasive mineral. Aluminum oxide is a popular choice among industrial professionals because of its cut-rate and long life. This mineral is a tough, durable abrasive that self-fractures to expose fresh cutting edges in use, whereas traditional abrasives, such as garnet, quickly wear down with use. Due to its high cut-rate, hardness, strength, and low heat retention, aluminum oxide mineral is widely used in grinding applications in addition to sanding and finishing use. Aluminum oxide is suitable on a wide variety of substrates in both woodworking and metalworking, including ferrous alloys.We developed Scotch-Brite™ surface conditioning products with abrasives incorporated into non-woven nylon or synthetic fibers. Combining abrasives with the fibers creates an abrasive system that delivers consistent results for the life of the product. The open-web material runs cool,reducing the risk of part discoloration and warping. The fibers are load resistant and keep the abrasive minerals cutting at high performance by limiting clogging of the fibers, which also extends the life of the disc.3M™ Roloc™ quick change discs are smaller discs that attach easily and quickly onto a Roloc™ disc pad (sold separately) so that you can conveniently change discs 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 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.