The 3M™ Cubitron™ II fiber disc 982C slices through carbon steel with precision-shaped, triangular grain. The grain features peaks designed to slice through metal and continuously shelf-sharpen as the points break off, which helps to reduce friction, extend life, and minimize operator fatigue. Designed for carbon steel applications. Use in high-pressure grinding applications such as medium to heavy-duty stock removal. • The fiber disc is well-suited for edge chamfering, machining grooves, beveling, and removing carbon steel welds, mill scale, pits, and imperfections. • Recommended for blending large and small areas of metal surfaces.• Tough, stiff backing made from vulcanized fiber to resist wear and handle tough grinding applications.