The NGK spark plug set includes four high-quality iridium resistor spark plugs that are 19mm long and feature a 10mm diameter. Designed for exceptional performance and durability, these spark plugs ensure efficient ignition and optimal engine operation. The iridium material provides improved fuel efficiency and longer service life, making them a great choice for vehicle enthusiasts. The visible detailing on the spark plug, including its robust construction and fine electrode configuration, enhances its appeal by showcasing its reliability and advanced engineering. This set is suitable for various models, providing an essential upgrade for optimal engine performance.