3M™ Cubitron™ II Roloc™ Fibre Disc 33389 is built to withstand heavy-duty metalworking tasks like grinding, cutting spot welds, deburring, metal shaping, and more. Get uniform, high-performance with Advanced Cubitron™ II abrasion. This 3-inch disc cuts 30% faster than conventional ceramic discs and lives twice as long. Precision Shaped Grain (PSG) technology helps make cutting, grinding and metal sanding jobs faster and more uniform. The triangular, high-performing abrasive grain self-fractures during cutting and maintains consistent, sharp performance. Improve your productivity with fewer disc changes and a lower cost per grind. Resin bonding and stiff fiber backing offer long-lasting, tear-resistant disc life. 3M™ Cubitron™ II Roloc™ Fibre Discs offers all-around faster cutting and improved performance compared to other premium grinding discs.