Abrasives are substances or equipment that are used to polish, sharpen, or eliminate surface blemishes from materials. They are frequently employed in fields including metalworking, woodworking, and vehicle repair. Sandpaper, bonded and coated abrasive discs, steel wool, and abrasive stones are a few examples of abrasives. The kind of surface being prepared and the desired result will determine the abrasive substance and grit to use.