Ensure precise engine adjustments with the GEARWRENCH Feeler Gauge Set - a versatile and reliable tool designed for both professionals and automotive enthusiasts. This set includes 12 blades for a comprehensive range of thickness measurements, allowing you to achieve accurate clearances in various engine components. In addition to the blade set, the inclusion of 6 wire spark plug gap tools makes this set an all-in-one solution for adjusting spark plug gaps. Achieving the correct spark plug clearance is crucial for optimal combustion and engine performance, and the GEARWRENCH set simplifies this process. Crafted with durability in mind, the feeler gauges are constructed from high-quality materials, ensuring longevity and resistance to wear. The user-friendly design with clearly marked measurements makes it easy for anyone to use, from seasoned mechanics to DIY enthusiasts working on their vehicles.