3M's Cubitron II Fibre Roloc Discs are designed for heavy duty metalworking applications such as weld grinding and clean-up. These discs are engineered to cut faster, cooler and with less grinding pressure than conventional abrasives. They last up to five times longer which provides increased productivity. Having a clean, smooth finished surface is crucial to a proper adhesion of things like paint and Bondo. 3M delivers these quality discs to help get the job done which are available in 2" and 3" diameters and various grit ratings for your specific application needs.