When it comes to freeing corroded items in tough spaces nothing rivals powerful industry-proven Kroil penetrating oil. Used and trusted by pros and experienced DIYers alike since 1939 Kroil quickly loosens rusted nuts and bolts frees frozen shafts pulleys and more. No space is too tight to reach thanks to Kroil's ability to penetrate the smallest opening thread or crevice. Corrosion meets its match as Kroil removes and prevents rust cleans and lubricates and displaces moisture. NEW! NSF Nonfood Compounds Program Listed Category Code: H2 Registration #165745 (8oz and gallons). 50-State VOC Compliant. Made in the U.S.A. (Portions of packaging imported.)