[Adjustable 9000rpm High Frequency ]: The working frequency of AUTOOL SPT301 Car Spark Plug Tester can reach up to 200~9000 rpm. The higher the frequency, the higher the intensity of the spark plug;.

Brand: AUTOOL
Country/Region of Manufacture: China
Type: spark plug tester
Material: plastic
Vehicle Type: Passenger Vehicle, Motorcycle
Volt: 12 Volt
Warranty: 3 Year