3M Utility cloth sheet 011K is best for metal polishing because it provides excellent flexibility and durability, even when rolled or folded. It is constructed with aluminum oxide and bonded to a flexible J-weight cloth backing, which can be torn by hand when a smaller piece is needed. - Utility cloth sheets are suitable for many different sanding and maintenance applications on metal or wood surfaces. The cloth backing in sheet form provides the flexibility needed to sand circular edges or small pieces, without tearing as easily as paper or losing grit from folding or bending.