3M 7515 2" Scotch Brite Roloc Surface Conditioning Discs, Medium Blue 3M 7515 2" Scotch Brite Roloc Surface Conditioning Discs achieve burr-free, paintable finishes in fewer steps without damaging the base material. Designed with non-woven, open web, durable construction that resists loading. Scotch-Brite Discs offer repeatable finishes for a wide variety of applications. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.