This flaring tool kit makes single and double flares on copper, aluminum, brass, magnesium, and soft steel. In addition to brake lines, it can also be used in air conditioning lines, hydraulic lines. The T-handle provides a solid lever to reduce fatigue, allowing you to get a flare without much effort. And this double flaring tool kit comes with a handy plastic case for easy storage and transportation. The hard plastic storage case keeps tools contained and organized, provides a convenient handle for easy transportation and portability. Committed to providing you with professional and comprehensive repair tools. The sizes included in this flare tool kit will help you with most of your problems. If you have any questions about this product, please feel to contact us.