Kroil Penetrant with Silicone (formerly SiliKroil) combines the legendary Kroil formula with silicone for superior penetration lubrication and rust prevention. This high solvency oil penetrates the tightest spaces to break rust bonds and provides molecular-level lubrication.Kroil Original Penetrant with Silicone - 16 oz aerosolEnhanced Kroil formula with added silicone for extra lubricationPenetrates tight spaces to break rust and corrosion bondsProvides long-lasting protection and lubricationIdeal for frozen bearings slides gate valves hinges and chainsExcellent for coastal areas and salt/weather exposureMade in USA 50-State VOC CompliantPerfect for freeing virtually any frozen metal part while providing lasting protection against rust and corrosion in harsh environments.