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Click for Larger Image and more information Compression Gauge Extension Tube 14mm Extension (14mm thread size) brings a spark plug hole above the valve cover on deep plug hole & hemispherical engines for easy compression gauge attachment. Compression Gauge Extension - Works on deep-hole spark plugs and Hemi-engines - Extends spark plug hole 7 12 - Attaches compression gauges easily - O-ring seal allows complete compression transfer. For more SPECIAL TOOLS....Click Here Excellent for the professional or shadetree mechanic! If you are not in the mainland you will need to (email or call with any questions.) We are open 7 days a week to answer all inquiries. |