Chemtech Brake Clean, Brake Parts Cleaner is the heavy-duty, aerosol brake cleaner that puts an end to annoying high-pitched disc brake squeals. No dis-assembly required, just spray it on straight from the can. The high-solvency formula gets to work fast, penetrating and dissolving thick brake dust, oil, grease and other contaminants. Quick drying without leaving any residue, brake linings, pads and components will be squeaky clean, and whisper quiet.