Adaptor for spark plug M10 x 1.0 mm. Threaded female internally 14x1.25 to fit the majority of existing compression tester hoses.
Compression Tester Spark Plug Adaptors 10 and 12 mm
Performance Tool W80577 Compression Tester Spark Plug Adapters Set
Compression Tester Spark Plug Adaptor 12 mm
Spark Plug Tester Diagnostic Spark Plug Tester Spark Plug Detector Tester for
Automotive Spark Plug Tester 12V Ignition Plug Tester Spark Plug Diagnostic Tool
Brand New Compression Tester /SPARK TESTER
