KLOTZ BLACK FORMULA HI-PERFORMANCE CHAIN CASE LUBE CONTAINS GRAPHITE MOLECULES FOR REDUCED FRICTION AND SURFACE DRAG. PROVIDES MAXIMUM POWER AND PERFORMANCE IN EXTREME HOT AND COLD CONDITIONS. PENETRATES DEEP INTO CHAIN ROLLERS TO LOOSEN STIFF LINKS AND EXTEND CHAIN AND SPROCKET LIFE. ELIMINATES RUST AND CORROSION ON CHAINS AND SPROCKETS.