DUOYI Spark Plug Tester Dual Holes Spark Tester Working Frequency 500-6000rpm Spark Plug Tool for 12V Gasoline Vehicles Ignition Coil Tester with A Protective Cover
DUOYI DY28 Car Spark Plug Tester Ignition Tools 110V-220V Double Hole Wiring Lgnition Spark Plug Analyzer 1000rpm to 6000rpm/min Product Function: Dual Hole Car Spark Plug Tester Detector have two testing holes, you can test two spark plugs meanwhile and and if you suspect any spark plug works improperly you could compare and test to make accurate judgment. Adjustable double hole car spark plug tester detector Ignition Plug Analyzer Diagnostic Tool Features: Dual Hole Adjustable working frequency 1000rpm to 6000rpm/min Protection cap Dual Hole Car Spark Plug Tester Detector have two testing holes, you can test two spark plugs meanwhile and and if you suspect any spark plug works improperly you could compare and test to make accurate judgment. Wide range of uses-----professional detector suitable for car owners Usage: Test spark plug performance and ignition strength ①This igniter can be used in spark plug wholesale stores to display product quality As a gift to customers.