Grease Joint Rejuvenator Application Unclog Grease Bearings Instantly opens clogged grease joints. Cleans ways and stays in milling machines and lathes Lubricates and unclogs bearings/control arms/ king pins/ piston arms/ packaging/ chafts/ bushings/ etc. Can be used on farm/construction/lawn/excavating/manufacturing/machine shop/ and well-drilling equipment as well as trucks/trailers/and marine drivetrains.