Check the listing for details. 3M 54251 Cubitron™ II CHEMICAL. Color: Maroon, Condition: New. Listed at 50.95 USD. 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. 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.