3M™ Cubitron™ II Roloc™ Durable Edge Disc 947A has a name that precedes it. This disc reflects the benefits of 3M™ Cubitron™ II Brand and 3M™ Roloc™ Brand Products — coupling the sharp, consistent cutting action of 3M™ Cubitron™ II Discs with an easy-to-use 3M™ Roloc™ Attachment. Built for durability and strength, it's great for edge work, because it stands up to edges without tattering or fraying.3M Cubitron II Roloc Durable Edge Disc 947A was built for low to medium-pressure applications that require edgework. Its small size makes it nimble and maneuverable, so operators can get in, over and around intricate parts. The dual combination of backing and weight add strength to the disc. In fact, these attributes were chosen carefully, so the disc could withstand wear from edges. The poly-cotton backing is a polyester and cotton blend, which makes it more durable than cotton alone and offers good tensile strength with more water resistance. Among backing weights, an X-weight is heavy, durable and quite stiff. The disc's heavy-weight backing minimizes the likelihood of tearing. So what makes 3M Cubitron II Roloc Durable Edge Disc, 947A desirable? They're engineered to cut fast, run cool and last long. The 3M Cubitron II Roloc Durable Edge Disc 947A features 3M Precision Shaped Ceramic Grain. This revolutionary technology features triangular shaped ceramic minerals. As those minerals wear during use, they fracture at angles that continually form sharp points. This allows the minerals to keep slicing through the substrate with ease, while helping the grain wear more evenly. Moreover, because the triangles are evenly spaced when adhered to the backing, the gaps between them permit dust and debris to escape, minimizing loading. The disc is available in 40+, 60+, 80+ and 120+ grit, so operators can choose the grit most fitting for their application. Another benefit of 3M Cubitron II Roloc Durable Edge Disc 947A is that it features a Roloc Attachment System. Roloc Attachments were designed to make disc-to-tool connections quicker, faster and more efficient. With a simple 1/2 twist, operators can secure or detach a disc from a Roloc Backup Pad (sold separately). With the help of a Roloc Attachment, operators may enhance overall productivity. This particular disc is available in a TSM (metal) or TR (plastic) attachment. Please select discs with the attachment design made for your system.