FEATURES: Application: Fit for Ford/Navistar 6.0L & 6.4L Power Stroke 2003-2008, for International Harvester VT365 4200, for Navistar/International 6.0L VT365E. Use with Diesel Compression Tester TU-15. Function: M14-1.25 thread adapter attached to a hose with quick disconnect screws into the head of the engine in the glow plug hole. Material: Made from durable rubber and steel for rust and corrosion resistance. Carefully manufactured to ensure long term use. A Must-Have Tool: This tool can meet your needs and get the job done right. Note - gauge is not included in the package. .