The double hole of the diagnostic tool of the spark plug analyzer of the spark plug tester can be adjusted.5. You can adjust the working frequency between 1000 RPM and 5000 RPM. The higher the frequency, the stronger the spark strength.

Fit for: 12V Gasoline vehicles car spark plugs
Functions: Test spark plug performance and ignition strength
Package includes: 1pc x Spark plug tester;1pc x Power Adapter
Placement on Vehicle: Left
Fitment Type: Direct Replacement
Type: Spark Plug Tester
Manufacturer Part Number: ANCEL SP02 Spark Plug Tester
Brand: ANCEL
Color: Red
Vehicle Type: Passenger Vehicle
Features: User Friendly
Volt: 12 Volt
Product size: 145x85x113mm
Packing size: 165x100x118mm
Analog speed: 0-6000rpm
Usage: Test car spark plug performance,igniton intensity