3M Hookit Film Disc, 360L, P800, 3 in x 7/8 in (76.2 mm x 22.2 mm) The 3M Hookit Film Disc 360L features an aluminum oxide abrasive grain on a film backing for effective fine sanding on plastics, gel coats, and polyurethane solid surface substratesThe sturdy film backing gives the durability needed for a high-production environment, and also offers excellent resistance to edge tearing to extend disc life. Product Information Brand 3M Part # 7100112430 Origin Country USA Product Information3M Hookit Attachment makes disc easy to change and reuse, maximizing the utility life of the discAluminum oxide abrasive offers a fast cut rate, long life, and performs well on many surfacesDurable film backing resists tearing and provides a close-tolerance, consistent finishOpen coat construction helps reduce loading and provides a more aggressive cut