Tough and aggressive ï¾– removes scale and bead from all metals. Multi-purpose ï¾– may be used as a conventional flap disc, and also for underhand applications using the top of the disc. Works faster than grinding wheels without the risk of undercutting the workpiece. Precise grinding out of fillet welds provides a superior surface finish. Smooth finish allows easy visual inspection for defects, such as porosity and inclusions. Ideal for repair applications to remove defects without damage to adjacent areas. Excellent tool life, including the radius edge of the disc.