⚡Spark Plug Tester with Dual Test Holes Plug:110V-US so you don’t have to

so you don’t have to worry about rust or corrosion

✅No longer afraid of strong ultraviolet rays

Material: Polyester

1×Double Head Ring

Conduct patch test if prone to allergies

⚡Spark Plug Tester with Dual Test Holes Plug:110V-US so you don’t have toFEATURES DUAL HOLE SIMULTANEOUS TESTING: Allows simultaneous testing of two spark plugs, enabling quick comparison and diagnosis of ignition issues in multiple cylinders. ADJUSTABLE WORKING FREQUENCY: The adjustable frequency range (up to 6000 RPM) accommodates different engine types and conditions, ensuring accurate testing across various vehicles. PROTECTIVE COVER DESIGN: Features a robust protective cover that shields users from potential sparks