3M Utility cloth roll 211K works well for any number of applications on metal. 211K is ideal for finishing, blending and where considerable flexibility and conformity are required, such as contour work on curved surfaces. It's also exceedingly flexible relative to stiffer cloth-backed abrasives. This roll has a closed coat aluminum oxide, which is the abrasive of choice among industrial professionals because of its fast cut and long life. It yields an aggressive cut and a fine finish on many metals, including mild steel. - 3M Utility cloth roll 211K is a light J-weight cloth abrasive for general maintenance work. This closed coat aluminum oxide abrasive comes in a range of grades for common applications like repairing metal finishes, removing rust, deburring, blending and surface preparation for paints and coatings. Aluminum oxide mineral delivers a soft scratch pattern that is often desirable for finishing and polishing.