Our Cubitron™ II Hookit™ clean sanding abrasive discs 737U combines the highest 3M™ technologies for automotive repair. Its long-lasting sharp triangular shaped grain and multi-hole pattern for superior dust extraction make the disc ideal for paint removal, rough body filler shaping, fine feather-edging or final prep before blending or priming. The Hookit™ system makes for quick disc change outs. We developed our Cubitron™ II Hookit™ clean sanding abrasive discs 737U for superior cut and long disc life during key stages in auto body repair. It features 3M™ precision shaped grain technology. This triangular shaped grain cuts at least 30% faster and lasts at least 30% longer than traditional ceramic abrasives. The disc is ideal for feather edging, as a final sanding step before priming or during prep before blending.