3M 31441 Stikit Gold 6" P120C Grit Disc Grade P120 for Rough Featheredging around repair area. Sanding Paint, plastic filler or putty. Premium Aluminum Oxide Mineral that is FEPA Graded for a uniform scratch that results in a consistent finish Ideal for Sanding Paint, Plastic Filler or Putty. Suggested backup Part No. 35576 Pack of 5 discs