Car Spark Plug Tester with Auto Adjustable Double Hole Detector Ignition Plug

It can be used to test the performance of spark plugs safely and quickly. Why Choose AUTOOL SPT101 Automotive Spark Plug Tester?. 1 AUTOOL SPT101 Automotive Spark Plug Tester Host. The working frequency is designed to be adjustable from 0 to 6000rpm.

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