1Efficient Thread Repair: The thread repair file is specially designed for repairing SAE UN threads effortlessly. It provides fast and efficient thread repair for pipes, automotive, engineering, and home projects. 2Durable and Reliable: Made from 45 steel, this thread repair file is built to last. The steel construction ensures its durability and reliability, making it a reliable tool for long term use. 3Wide Range of Sizes: With thread sizes ranging from 12 to 28, this thread repair file offers a wide range of options to meet your various repair needs, ensuring compatibility with different threaded parts. 4Straight Groove Design: The thread repair files feature a straight groove design, allowing for precise and accurate thread repair. This design ensures that the repaired threads are aligned correctly for a secure and firm connection. 5Versatile Application: The thread file is suitable for various applications, including pipe fittings, automotive repairs, machinery, and home projects. It is a versatile tool that can be used in different industries and settings. 1 x File