Our Cubitronâ„¢ II Hookitâ„¢ Clean Sanding Sheet Rolls 737U combines the highest 3M technology for automotive repair. Its long-lasting triangular shaped grain and multi-hole pattern for superior dust extraction make it ideal for paint removal, rough body filler shaping, fine feather-edging or final prep before blending or priming. Our Hookitâ„¢ system makes for quick change-outs of abrasive sheets.