brake cleaner aerosol. removes grease, oil, greases, braking dust, dirt and other. leaves no traces. removes brakes whistle. very effective also on all other metallic surfaces use: shake before using. surface which you spray is not allowed to be hot. spray surface 10-20cm distance, let to act 5-10 minutes up to substance evaporates. wipe surface with soft and dry cloth. if necessary repeat procedure.