The 3M™ Trizact™ Hookit™ Foam Abrasive Sheet 443SA features a foam backing that provides support for the very fine grade abrasives and conformability for removing very fine swirl marks and scratches – ideal for painted surfaces where buffing is difficult. Microreplicated 3-D mineral abrasive structures are distributed uniformly across the surface and wear evenly for consistent finishes and longer sheet life.