Material: The spark plug replacement kit is made of high quality rubber and metal. The rubber is robust, resistant to wear and aging. The metal lock terminal is non-rusting and corrosion resistant, which can be used by you for a long time. Good Build Quality: This set of products, high quality workmanship, precise, flat surface, no burrs, to ensure that the package coil connection tight, perfect and stable, does not fall off, for the stability of motor performance to increase protection. Practical: This kit can provide perfect protection for the spark plug coil, dust-proof, reinforced, to ensure the safety of the engine ignition device, and keep the use of premium performance, a set of 8 groups, can be used as emergency spare parts. Convenience: The spark plug coil housing and terminals, closer to the original automobile standards for manufacturing. You can directly replace the relevant parts of the spark plug coil, supporting the combination, convenient and fast, which is friendly and considerate for use.