The Würth WURTH0893250300 Boltex Cobra Penetrating Oil is a high-performance solution for loosening extremely rusted and oxidised screw connections. This 300ml aerosol features exceptional creeping properties, allowing it to penetrate deep into tight tolerances. It provides excellent rust dissolving capabilities, combined with lubricating and corrosion protection benefits. The formula is resin-free, acid-free, and silicone-free, ensuring compatibility with rubber and seals. It offers temperature resistance from -20°C to +140°C, making it suitable for a wide range of applications in automotive, agricultural, and construction machinery.