Quickly cleans and degreases all metal and aluminum surfaces, fouled spark plugs, carburetors, and other small parts Nonconductor formula for use on electrical systems, electric switches, connections, motors, starters, and alternators Completely cuts through and removes carbon, oil, dirt, grease, tar and adhesives without leaving a residue Will not damage engine parts, carburetors, brake parts, ignition parts, spark plugs, or engine sensors. PLUG & CONTACT CLNR 12.5 OZ