Produces perpendicular cuts with the outside edge of the disc, making it ideal for cutting metal, including auto body or marine sheet metal, stainless steel tubing, exhaust pipes, clamps, rusted fasteners and more - Features a re-engineered 3M precision-molded grit that uses proprietary molecular bond technology microfractures (their structure is designed to break continuously during the sanding process and always form many sharp cutting edges)The abrasive utilises proprietary molecular bond technology microfractures (their structure is designed to break continuously during the sanding process and always form many sharp cutting edges) - smooth, sharp edges help create an abrasive that cuts faster, sands cooler and lasts much longer than conventional abrasives.