Product Description Supco Rust Buster Liquid Penetrating Oil. Loosens rust in seconds, no lingering odor Quickly loosens screws, nuts, shafts and other frozen-Inch parts Telescoping spout extends 7-1/4-Inch for hard to reach areas High quality construction. Quality Replacement Part. Great Value. From the Manufacturer Supco Rust Buster Liquid Penetrating Oil. Loosens rust in seconds, no lingering odor Quickly loosens screws, nuts, shafts, and other frozen-Inch parts Telescoping spout extends 7-1/4-Inch for hard to reach areas High quality construction. Quality Replacement Part. Great Value.