For versatility you can use your Milwaukee Mini Grinder for Sanding operations as well. This lightweight polypropylene backing pad kit converts Milwaukee's 6140-6 to a Sander. Kit includes a 4-1/2 inch backing pad, a 5/8 - 11 thread disc nut and also includes one each 36 and 60 grit sanding discs.
4-1/2 inch diameter Kit Includes 36 and 60 grit Sanding Discs 5/8-11 thread Polypropylene Pad