Use for stripping sanding Surfaces like Clear Coat, Fiberglass, Filler, Metal, Paint, Plastic, Putty. Color Purple. Abrasive Mineral Type Ceramic. Attachment Method PSA. Glue Back Film Sheet Rolls are continuous strips of abrasive with an adhesive backing that firmly attaches the sandpaper to blocks and file shoes. One roll supplies paper for air files and sanding blocks in any size. Custom sizing means there's less waste.