3Mâ„¢ Trizactâ„¢ PSA Film Disc 568XA has all the benefits industrial professionals have come to expect from Trizactâ„¢ abrasives, including consistent and sharp cutting action. What makes this abrasive unique is the naturally-occurring mineral that's used: cerium oxide. It helps with glass defect repair and acrylic solid surface finishing by minimizing gouging.