Introductions: Spark plug is used to lead the high voltage into the combustion chamber, and generates an electric spark ignites gas mixture. Match up with the ignition system and fuel supply system to make the engine work, and they codetermine the performance of the engine in a large part. Here are highly recommended these 8pcs Professional Practical Spark Plugs to you. With premium material and sophisticated workmanship, they are safe and durable to use. Designed of lightweight and portable, it is easy enough for you to operate. What is more, reasonable price makes it more and more popular among people. Don't miss it anymore. Features: 1. Features high-melting-point, higher fuel efficiency, and the use of fuel is more economical 2. It is the combination of elegance and good use, firmly and securely, guaranteeing the safety 3. First-rate copper V-groove material, delicate workmanship and high performance 4. Light weight and portable design, easy to carry with 5. It plays a great role in the general performance of auto engine 6. New and in a good working conditionSpecifications: 1. Material: Copper V-Groove 2. Part Number: R5671A7, #409 3. Quantity: 8 PcsPackage Includes: 8 x Spark Plugs Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.