The Aeroflow hand held brake flaring tool is the fastest way to get a professional single flare while the hard line is still installed into the car and in hard to access areas on vehicles or onsite. This 45-degree or 37-degree flaring tool is great for both brake lines and AN tube nuts and sleeves. This tool will work with 3.17mm (1/8”) tubing right through to 19.05mm (3/4”).