The Kroil Penetrating Oil in a convenient 1-gallon container delivers industry-proven performance for freeing corroded items in the toughest spaces. Trusted by professionals and experienced DIYers since 1939 this powerful penetrating oil quickly loosens rusted nuts and bolts frees frozen shafts and pulleys and reaches into the smallest openings threads and crevices.Kroil Penetrating Oil - 1 Gallon CanProfessional-grade formula trusted since 1939Penetrates smallest openings threads and crevicesRemoves and prevents rust while cleaning and lubricatingDisplaces moisture for complete corrosion protectionNSF Nonfood Compounds Program Listed (Category Code: H2 Registration #165745)50-State VOC CompliantMade in the U.S.A.Perfect for automotive industrial and maintenance applications where reliable penetration and corrosion removal are essential. The large 1-gallon size provides excellent value for frequent users and professional workshops.