3M 80 Grit 2" Diameter Green Corps™ Roloc™ Disc 25 Pack. A coarse grinding disc for removing paint, rust and welds in collision repair. Its small diameter makes it especially useful in hard-to-reach areas. Convenient Roloc™ attachment securely locks the disc in place with a simple twist and allows for disc removal just as easily. And the grades are color coded for fast, accurate identification.