Check the listing for details. Car Spark Plug Tester Dual Hole Diagnostic Tool Gasoline Ignition Analyzer Test. Condition: New. Listed at 18.85 USD. Car Spark Plug Tester Dual Hole Diagnostic Tool Gasoline Ignition Analyzer TestFeatures: 🚗【High-Quality】Dual Hole Car Spark Plug Tester Detector have two testing holes, you can test two spark plugs meanwhile.🔧 【Perfectly Match】Adjust the working frequency between 1000rpm to 5000rpm/min, the higher the frequency, the stronger the spark strength.If you suspect any spark plug works improperly you could compare and test to make accurate judgment.🚗 【Adaptability】Test spark plug performance and ignition strength, apply to 12V gasoline vehicles car spark plugs.🔧 【High-performance Tools】Double hole of the car spark plug tester detector ignition plug analyzer diagnostic tool can be adjusted.🚗 【Professional Quality】Product undergoes rigorous quality testing. Please confirm your car model before purchasing to avoid buying the wrong. If you have other questions, please contact us as soon as possible.Specifications:Type: Car Spark Plug Tester Material: Plastic Color: Black Plug: EU US Plug Input: AC 100-240V Output: D C 12V 1A Size：145*85*60mm Usage: Test spark plug performance and ignition strength Application Range: 12V Gasoline vehicles car spark plugs Diameter of Spark Plug: 1cm Note:Only suitable for: Spark plug hole inner diameter(Spark plug thread diameter): 10mm Spark plug hole depth(Spark plug thread length): 13mmAutomotive Spark Plug Tester User Manual: 1. Put the spark plug into the tester hole 1 or 2; if you want to compare the old and new spark plugs, please put the new spark plug into hole 1 and the old spark plug into hole 2 2. Connect the power supply 3. turn key switch 4 clockwise to turn the tester on, light 3 will come on and the tester is now operating at 1000rpm/min. 4. turn key switch 4 clockwise again to turn the tester on. 4. Turn key switch 4 clockwise again and you can adjust the operating frequency from 1000rpm to 5000rpm/min. The higher the frequency, the stronger the spark. Package included: 1 x Car Spark Plug Tester 1 x Power Supply Connector ShippingPaymentReturn & Refund policyFeedbackCustomer Support - ContactShippingFREE SAME BUSINESS DAY MONDAY- FRIDAY SHIPPING FROM USA. All orders and payments received before 4PM EST (1PM PST) will be shipped the same business day. All other orders within 1 business day. No shipping on Weekends or US Public Holidays. No responsibility for any custom duty Shipping information will be updated when available.PaymentWe accept payment via PayPal. Use PayPal at checkout to pay with credit or debit. Immediate payment is required. Shipping will be arranged within 1 business day once payment is cleared.Return & Refund policy1.We stand behind our items and offer 60 days warranty. All items are in new and working condition unless specified otherwise elsewhere in the description. 2.All Returns - defective or otherwise - MUST BE PREAUTHORIZED to guarantee refund or exchange. Please contact us to get an authorization and return address. 3.Buyer agrees to pay for the cost of re-shipment for undeliverable or wrong addresses. 4.Buyer is responsible for Return Postage as well as a 20% restocking fee if return/replacement is not a result of our mistake such as wrong item. 5.Replacement or Refund will be made upon receipt of the returned item. Please include tracking number so we can process ASAP. If you do not wish to wait for a replacement, please repurchase the item. 6.ALL REFUNDS will be processed via PayPal. Please double check via PayPal history and transaction for confirmation. PayPal will send it back to whatever you used to pay within 3-5 days.FeedbackWe strive to provide the best products and services. If anything about your transaction did not meet expectations, please CONTACT US and give us the opportunity to make things right. We are always here to help.Customer Support - ContactPlease do not hesitate to CONTACT US. You can message 24/7 on eBay for all questions and inquiries. We will get back to you within 1-2 business days at the latest.