Excellent for removal of rust, undercoating, seam-sealers and stone guards Use to remove oxidation from tire rims and to remove rust from brake assemblies Norton Abrasives 31053 3 SPEED-LOK TR R Sold Individually Norton Abrasives 31053 3 SPEED-LOK TR R. Sold Individually. 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.