Overall, the spark plug hole maintenance tool not only addresses thread damage but also ensures that spark plugs are securely fitted. This promotes smoother engine operation and can prevent misfires or performance issues, addressing common problems faced by vehicle owners. Features -Color:Black -Material:Steel -Size:7.80X2.50X2.00cm/3.07X0.98X0.79in -Size:6.50X2.50X2.00 cm/2.55X0.98X0.79in -Fast thread restoration: enables rapid repair of spark plug threads, improving repair time -Universal fit: designed to accommodate multiple types of vehicles, ensuring compatibility and usability across different automotive brands and models -Detailed maintenance guide: includes a guide with tips for better practices in thread repair, enhancing user knowledge and automotive care -High torque capability: built to handle high torque applications, ensuring threads are securely reestablished to prevent future failures -Universal Compatibility: Suitable for a wide range of spark plug sizes, making it a versatile addition to any mechanic's toolkit Package list: 2 x spark plug repair tools