Pferd POLIFAN SGP CO-Curve Flap Wheels Tough and aggressive – removes scale and bead from all metals: steel, stainless steel (INOX), aluminum and alloys. Works faster than grinding wheels without the risk of undercutting the work piece. 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. Leaves ample room for new weld bead Pack of 1