This conditioning disc is durable, non-woven disc with the efficient 3M Roloc quick-change attachment system. It effectively cleans, finishes, blends, and deburrs. It's non-woven fiber construction conforms well to help preserve irregular or contoured surfaces. The Roloc backing supports the disc for aggressive cutting. The open-web fiber runs cool and resists loading while the abrasives provide a high cut-rate to give you consistent finishing. Use for cleaning and finishing on all metals for removal of light rust, oxides and coatings. 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.