3M™ Cubitron™ II Roloc™ Durable Edge Disc 947A has a name that precedes it. This disc reflects the benefits of Cubitron™ II and Roloc™ products — coupling the sharp, consistent cutting action of Cubitron™ II discs with an easy-to-use Roloc™ attachment. Built for durability and strength, it's great for edge work, because it stands up to edges without tattering or fraying.