3M™ Hookit™ Paper Disc 245 features a stiff paper backing that provides a long product life. Our 245 paper discs are resin bonded to prevent premature ‘burning’.Use 3M™ Hookit™ Paper Disc 245 for initial and intermediate surface preparation. Our 245 paper discs have a strong E-weight backing that provides long product life.These discs are resin bonded to prevent premature ‘burning’.245 discs utilise the 3M™ Hookit™ Attachment System for easy application and removal.