Feature: 1. Versatile Metric Sizes: Our flare nut wrench set includes four of the most commonly used sizes, 10mm, 12mm, 14mm, and 17mm (6in, 7in, 7.5in, and 8.5in). Each size is carefully selected to ensure you have the good tool for a variety of tasks, making this set an essential addition to your toolkit for both handcraft enthusiasts and professionals alike. 2. Double Head Design: Featuring an open end on one side and a combination of an open end and flexible ratchet head on the other, this tubing ratchet spanner is designed to meet different needs. The ratchet mechanism allows for easier tightening of nuts in tight spaces, providing convenience and flexibility in various working environments. 3. Ratchet Mechanism: Equipped with a ratchet mechanism on one end, this brake line wrench set minimizes the need to remove and reposition the tool while turning nuts, significantly reducing the time and effort required in confined spaces. With just a 5° swing arc, it allows for efficient engagement with fasteners, making your work faster and easier. 4. Multifunctional: Our tubing combination wrench set is specially designed for securing closed end nuts in air conditioning and brake lines, guarding delicate copper nuts from damage. This tool is important for professional applications, ensuring the integrity and accuracy of vital systems in automotive and HVAC work. 5. Easy Using: The open end design effortlessly reaches the most confined areas, surpassing traditional wrenches. Suitable for quickly turning hard to reach bolts, this ratcheting tubing wrench ensures you never miss a nut, providing the ease and efficiency needed for various tasks, from automotive repairs to plumbing projects. Specification: Item Type: Flare Nut Wrenches Material: CR V Steel Specification: 10mm, 12mm, 14mm, 17mm (6in, 7in, 7.5in, 8.5in) Application: Fuel, Brake, or AC Line Nut. Package List: 4 x Flare Nut Wrenches