For creating International Standard Organization (ISO) bubble tubing flares (known as metric bubble flares) for connecting steel lines to hydraulic components in the braking systems on many European, Japanese and domestic cars and light trucks. Any automotive specialty tool will help make an automotive repair or maintenance task easier, but Powerbuilt products take the concept of help a big step further. Every Powerbuilt specialty tool comes with professionally written usage instructions that take you step-by-step through proper tool usage. Photographs of the tool in use accompany the instructions. All developed by an automotive professional who writes and edits automotive service manuals.