BELEY Car Spark Plug Tester, Automotive Dual Holes Ignition Plugs System Analyzer with Protective Cover for Testing 12v Gasoline Vehicle (Spark Tester with Cover)

APPLICATION RANGE -- Designed to test spark plug performance and ignition strength, suitable for 12V gasoline vehicles car spark plugs. PROTECTION DESIGN -- With protective cover design for better insulation, can effectively protect the user safety, more reliable and comfortable to use. TECHNICAL PARAMETER -- Power adapter: input 100-240V AC, output 12V 1A DC, spark plug inner hole diameter: 12mm, simulated engine speed range control: 500~6000. EFFICIENT OPERATION -- Two testing holes, you can test two spark plugs meanwhile. Plug and play, economical & useful tool to save your valuable time and money. PREMIUM MATERIAL -- Make of high-quality materials for solid, durable, reliable & long service time. Package includes 1 * car spark plug tester, 1 * power adapter.