The 3M 1439, 180 grit, 6", Sand Paper is used for feathering old paint and removing light surface rust, finishing sanding body filler, or glaze putties. Suggested backup pads 3M 05556 or 3M 05576. Alternate Products.
The 3M 01439, 180 grit, 6-inch sandpaper is best suited for finishing fine surfaces with a smooth, consistent cut.