Scotch-Brite Precision Heavy Duty Surface Conditioning Discs are a heavy-duty option designed for durability, long product life, and consistent performance. An extension of 3M s Precision Surface Conditioning Disc family, these discs are ideal for high-pressure applications, such as grinding, deburring, edge breaking, blending, and refining, lasting longer than competitive premium nonwoven abrasives while offering edge durability and shape retention during edge wear; grade XXCRS (60+) lasts 2X longer on mild steel and finishes 3X more mild steel parts compared to competitive premium nonwoven abrasives (based on 3M Internal Testing). The key to this disc s enhanced performance is 3M Precision-Shaped Grain technology, a proprietary molecular bonding technology designed with sharp, angular structures that continuously fracture to form sharp points. Scotch-Brite Precision Heavy Duty Surface Conditioning Discs are available in MED (150+), CRS (120+), XCRS (80+), and XXCRS (60+).