3M Red Abrasives are a comprehensive line of economical abrasives that deliver Best in Class performance on a variety of substrates Adhesive backed Stikit abrasive discs allow for easy attachment and removal where DA sanding is used An abrasive disc used for filler shaping and putty sanding Case Quantity: 6 boxes per case Case Inner Pack: 50 discs per box Diameter: 5 inch Backing: A Weight Paper Grade: P180 Grit Packaged Form: Boxed Sanding Surface: Clear Coat, Fiberglass, Filler, Metal, Paint, Plastic, Putty Abrasive Mineral: Aluminum Oxide Attachment Method: Hookit Sanding Method: Hand, Machine Wet or Dry: Dry