United Abrasives- SAIT 77447 6-Inch x 9-Inch General Purpose Maroon Non-Woven Abrasive Hand Pad, 20-Pack Maroon - General purpose. For removing light rust. Excellent for cleaning and brightening. Ferrous and/r non-ferrous metals. Non-woven synthetic fiber impregnated with abrasive grain for surface conditioning without damage to or removal of base material. Resists loading and heat build-up. Wet/dry construction for use in a wide range of applications. Available in a variety of grades from heavy duty to polishing applications. Reusable and long lasting design for economical use.