Transform your automotive fuel line work with this versatile installation tool kit designed for AN fittings. Compatible with common sizes from 4AN to 12AN, this comprehensive set streamlines both modification and repair tasks. The manual rotation mechanism allows for precise control, helping prevent thread damage while achieving secure connections - perfect for both DIY enthusiasts and professional mechanics. Constructed from a robust combination of aluminum, iron, and stainless steel, this tool kit delivers lasting durability for repeated use in demanding automotive applications. Its thoughtfully engineered compact and lightweight design makes it ideal for use in various settings, from home garages to race tracks, with convenient portability and storage. Whether you're working on custom builds or maintenance projects, this universal tool kit provides the precision and reliability needed for professional-quality fuel line installations across most vehicle models.