4 Pc master set for extracting broken dipstick tubes on Ford, Dodge, GM. When the dipstick tube breaks off, a piece remains at entry point, located at the bottom of the engine block near the oil pan. Use the extractor to thread into tube to remove. Includes 5401 Thread Adapter Tool and any standard thread 5/818 TPI slide hammer to properly remove the stuck dipstick tube. Features. Master Dipstick Extractor Kit, 4 Piece. Made with high quality material. 4 Piece