Using these Metabo flapper flap discs is easy. First, make sure your tool is compatible with the disc size. When using, apply moderate pressure on the material surface for efficient removal and blending. For best results, keep the disc moving steadily across the work area. Safety first! Always wear safety goggles and gloves to protect yourself from flying debris. After use, clean the disc gently with a soft brush to remove any built - up residue. Store the discs in a dry place to avoid rust and damage. If the disc shows signs of excessive wear, replace it promptly to maintain performance.