【 Dual Hole Testingu0026 Time-Saving】: The Car Spark Plug Tester is able to dual-hole simultaneous testing as well as analog engine working, which is much more efficient and time-saving.
【0 to 6000rpm Operating Frequency】: The Car Spark Plug Tester is designed with adjustable working frequency, the range can reach 0 to 6000rpm. Can be adjusted as you require.
【Easy operation Plug And Play】: Easy operation, plug and play. Come with an indicator light, so the status of the spark plug can be displayed more intuitively.