Efficient pipe smoothing tool with 6/10/12 mm sizes, designed to provide a fast and easy solution for smoothing brake and fuel lines. Comfortable handling - Ergonomic grip for easy use in tight spaces - Simply insert the hose and slide it back and forth for smooth, consistent results Sturdy metal design - Made from robust metal to resist rust and wear - Built to withstand regular use and demanding tasks Wide compatibility - Suitable for a variety of metal tubes including steel, stainless steel, copper, and aluminum Applications and use scenarios - Automotive brake line maintenance: quickly smooth and prepare brake lines for connections - Fuel line installation or repair: smooth fuel lines for reliable hose fitting and sealing - General tubing prep: ideal for smoothing and deburring metal tubing in small mechanical or DIY projects (steel, stainless, copper, aluminum) Key attributes - Size options: 6, 10, and 12 mm - Material: robust metal construction - Functions: smoothing and preparing brake and fuel lines; suitable for multiple metals - Performance: designed for ease of use and durability in regular tasks This tool provides a practical, reliable solution for mechanics and DIY enthusiasts who need a straightforward device to smooth and prepare metal lines with minimal effort.