Great super penetrant 250ml 3-in-1. penetre and act rapidly by releasing blocked pieces while protecting them. surface tension test (astm d-1331) = 19.58 22.46 dinas/cm - does not contain silicone - compatible all types of metal - supports temperatures from -30°c to 150°c. applications: nuts, screws, blocked parts, pipes, installations, locks, chains, joints, gonds, tools, etc ...