The 3M™ Cubitron™ 3 cut-off wheel produces perpendicular cuts with the outer edge of the wheel, making it ideal for cutting metal, including body or marine sheet metal, stainless steel tubing, exhaust pipes, clamps, rusted fasteners and more. The 3M™ Cubitron™ 3 cut-off wheel uses the re-engineered 3M Precision Moulded Grain, which utilises proprietary micro-fragments of molecular bond technology. Their structure is created in such a way that they break continuously during the grinding process and always form many sharp cutting edges. These smooth, sharp edges help to create an abrasive that cuts faster, grinds cooler and lasts much longer than conventional abrasives. 3M™ Cubitron™ high performance abrasives are designed for professionals who demand more from their equipment. Choose the 3M™ Cubitron™ 3 abrasive disc to experience the next generation of sanding performance. Key features.