Check the listing for details. Auto Spark Plug Tester 12V Petrol Gasoline Car Ignition Analyzer Diagnostic Tool. Condition: New. Listed at 39.99 USD. Spark Plug Tester 0 to 6000rpm Adjustable Spark Tester with Two Spark Plug Socket 100-240v with Protective Cover Ignition Tester Heat Resistance Spark Tester Automotive Tools for 14mm/16mm Spark PlugWe provide a free return label for all our products to ensure hassle-free returns. To receive this, please contact us before initiating a return request. We will assist you in obtaining a free return label. If you are not 100% satisfied, you can return the item for a full refund or a replacement. Please note that the free return label is only available for return requests submitted as selecting "CHANGE MY MIND" or "ORDERED BY MISTAKE". Keep this in mind when submitting your return request to qualify for the “FREE RETURN LABEL”. Thank You.PRODUCT DESCRIPTION【Dual Hole Testing & Protective Cover Protection】Spark plug tester has two spark plug sockets, it can test two spark plugs (good spark plug & bad spark plug) at the same time. By comparing the spark intensities of the two spark plugs, judge the performance and ignition intensity of the spark plugs, and replace the broken spark plugs in time.The design of the protective cover can prevent you from the risk of electric shock during the test, which effectively guarantees your safety during the operation.【0~6000rpm Working Frequency Adjustable & More Accurate Data】The automotive tools have a wide adjustment range of working frequency. By operating the rotary switch, you can adjust the working frequency in the range of 0~6000rpm, the higher the set frequency, the stronger the spark intensity.Spark plug tester can also simulate the work of the engine, restore the authenticity of the car rotate speed,save time and high efficiency,and the data is more accurate,which can better test the spark plug.【High-Quality ABS Material With Impact Resistance & Heat Resistance】Ignition tester is made of high-quality ABS material,which has the characteristics of impact resistance and heat resistance. It can provide you with long-term service and reduce the cost caused by frequent tool replacement.【Plug And Play & Intuitively Display Spark Plug Status】Spark tester automotive is easy to operate, and you can start using it after connecting the adapter. The spark plug tester comes with a power supply/high voltage indicator light, which can help you observe the state of the spark plug more intuitively.【Widely Used In 12V Gasoline Vehicles Car Spark Plugs】Spark tester is widely used, and can be used to test 12V gasoline vehicles car spark plugs, suitable for 14MM and 16MM spark plugs. It is compatible with all spark plug tests for crankshaft engines and motorcycles on the market.【Note】Spark plugs tester is a high voltage detector. Please do not touch the spark plug during the test to prevent the risk of electric shock.Packing List:1* Car Spark Plug Tester main unit.1* Packing box.1* User manual.1* Power supply connector.Scope of application: suitable for 12V driven gasoline vehicles spark plugs.Host size: 145*90*114mm.Host weight: 354 (without spark plug power supply).External power supply length: 1m.Power adapter: input 100~240V AC Output 12V 1A DC. 🛍️ SHOP WITH CONFIDENCE - HERE'S WHAT YOU NEED TO KNOW: 💰 Payments can be made using your usual method. We accept all payment methods provided by eBay. 📦 Orders are checked before dispatch and usually shipped within 1-5 business days. 🚚 Delivery time is typically 2-7 business days, so please ensure your shipping address is correct before making a purchase. 🔄 We accept returns within 30 days of item arrival. If there's any issue with your item, please contact us first. We'll respond within 1 business day. 👍 Our top priority is providing the best customer service. If you're happy with your purchase, we'd appreciate positive feedback. If you have any concerns, please contact us before leaving negative feedback. 💬 Contact us any time through eBay messages with questions, comments, or product requests. We'll respond within 24 hours and do our best to help you out! 🛒 Check out our store for more items. Thank you for visiting!