Cutting Discs With Maximised Efficiency. Meguiars DA Microfiber Cutting Discs are part of the Meguiars DA Microfiber Correction System. Each specially engineered microfiber disc levels moderate paint imperfections without creating swirls! Meguiars DA Microfiber Cutting Discs are made for maximum efficiency. Their engineered foam interface offers controlled conformability. As you move the polisher over the paint, the microfibers adapt to the curves and contours of the paint, distributing the abrasives evenly for efficient cutting.